398491520

素因数分解:

$2^7\times 5^1\times 7^2\times {\mathrm{97}}^1\times {\mathrm{131}}^1$

素因数の和:261

約数の個数: 192

約数和(自身を含む): 1128148560

約数和(自身を除く): 729657040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 97, 98, 112, 128, 131, 140, 160, 194, 196, 224, 245, 262, 280, 320, 388, 392, 448, 485, 490, 524, 560, 640, 655, 679, 776, 784, 896, 917, 970, 980, 1048, 1120, 1310, 1358, 1552, 1568, 1834, 1940, 1960, 2096, 2240, 2620, 2716, 3104, 3136, 3395, 3668, 3880, 3920, 4192, 4480, 4585, 4753, 5240, 5432, 6208, 6272, 6419, 6790, 7336, 7760, 7840, 8384, 9170, 9506, 10480, 10864, 12416, 12707, 12838, 13580, 14672, 15520, 15680, 16768, 18340, 19012, 20960, 21728, 23765, 25414, 25676, 27160, 29344, 31040, 31360, 32095, 36680, 38024, 41920, 43456, 47530, 50828, 51352, 54320, 58688, 62080, 63535, 64190, 73360, 76048, 83840, 86912, 88949, 95060, 101656, 102704, 108640, 117376, 127070, 128380, 146720, 152096, 177898, 190120, 203312, 205408, 217280, 254140, 256760, 293440, 304192, 355796, 380240, 406624, 410816, 434560, 444745, 508280, 513520, 586880, 608384, 622643, 711592, 760480, 813248, 821632, 889490, 1016560, 1027040, 1245286, 1423184, 1520960, 1626496, 1778980, 2033120, 2054080, 2490572, 2846368, 3041920, 3113215, 3557960, 4066240, 4108160, 4981144, 5692736, 6226430, 7115920, 8132480, 9962288, 11385472, 12452860, 14231840, 19924576, 24905720, 28463680, 39849152, 49811440, 56927360, 79698304, 99622880, 199245760, 398491520]

約数ペア:

[(1, 398491520), (2, 199245760), (4, 99622880), (5, 79698304), (7, 56927360), (8, 49811440), (10, 39849152), (14, 28463680), (16, 24905720), (20, 19924576), (28, 14231840), (32, 12452860), (35, 11385472), (40, 9962288), (49, 8132480), (56, 7115920), (64, 6226430), (70, 5692736), (80, 4981144), (97, 4108160), (98, 4066240), (112, 3557960), (128, 3113215), (131, 3041920), (140, 2846368), (160, 2490572), (194, 2054080), (196, 2033120), (224, 1778980), (245, 1626496), (262, 1520960), (280, 1423184), (320, 1245286), (388, 1027040), (392, 1016560), (448, 889490), (485, 821632), (490, 813248), (524, 760480), (560, 711592), (640, 622643), (655, 608384), (679, 586880), (776, 513520), (784, 508280), (896, 444745), (917, 434560), (970, 410816), (980, 406624), (1048, 380240), (1120, 355796), (1310, 304192), (1358, 293440), (1552, 256760), (1568, 254140), (1834, 217280), (1940, 205408), (1960, 203312), (2096, 190120), (2240, 177898), (2620, 152096), (2716, 146720), (3104, 128380), (3136, 127070), (3395, 117376), (3668, 108640), (3880, 102704), (3920, 101656), (4192, 95060), (4480, 88949), (4585, 86912), (4753, 83840), (5240, 76048), (5432, 73360), (6208, 64190), (6272, 63535), (6419, 62080), (6790, 58688), (7336, 54320), (7760, 51352), (7840, 50828), (8384, 47530), (9170, 43456), (9506, 41920), (10480, 38024), (10864, 36680), (12416, 32095), (12707, 31360), (12838, 31040), (13580, 29344), (14672, 27160), (15520, 25676), (15680, 25414), (16768, 23765), (18340, 21728), (19012, 20960)]