431440640

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{131}}^1$

素因数の和:266

約数の個数: 144

約数和(自身を含む): 1087865856

約数和(自身を除く): 656425216

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 83, 124, 128, 131, 155, 160, 166, 248, 256, 262, 310, 320, 332, 415, 496, 524, 620, 640, 655, 664, 830, 992, 1048, 1240, 1280, 1310, 1328, 1660, 1984, 2096, 2480, 2573, 2620, 2656, 3320, 3968, 4061, 4192, 4960, 5146, 5240, 5312, 6640, 7936, 8122, 8384, 9920, 10292, 10480, 10624, 10873, 12865, 13280, 16244, 16768, 19840, 20305, 20584, 20960, 21248, 21746, 25730, 26560, 32488, 33536, 39680, 40610, 41168, 41920, 43492, 51460, 53120, 54365, 64976, 81220, 82336, 83840, 86984, 102920, 106240, 108730, 129952, 162440, 164672, 167680, 173968, 205840, 217460, 259904, 324880, 329344, 337063, 347936, 411680, 434920, 519808, 649760, 658688, 674126, 695872, 823360, 869840, 1039616, 1299520, 1348252, 1391744, 1646720, 1685315, 1739680, 2599040, 2696504, 2783488, 3293440, 3370630, 3479360, 5198080, 5393008, 6741260, 6958720, 10786016, 13482520, 13917440, 21572032, 26965040, 43144064, 53930080, 86288128, 107860160, 215720320, 431440640]

約数ペア:

[(1, 431440640), (2, 215720320), (4, 107860160), (5, 86288128), (8, 53930080), (10, 43144064), (16, 26965040), (20, 21572032), (31, 13917440), (32, 13482520), (40, 10786016), (62, 6958720), (64, 6741260), (80, 5393008), (83, 5198080), (124, 3479360), (128, 3370630), (131, 3293440), (155, 2783488), (160, 2696504), (166, 2599040), (248, 1739680), (256, 1685315), (262, 1646720), (310, 1391744), (320, 1348252), (332, 1299520), (415, 1039616), (496, 869840), (524, 823360), (620, 695872), (640, 674126), (655, 658688), (664, 649760), (830, 519808), (992, 434920), (1048, 411680), (1240, 347936), (1280, 337063), (1310, 329344), (1328, 324880), (1660, 259904), (1984, 217460), (2096, 205840), (2480, 173968), (2573, 167680), (2620, 164672), (2656, 162440), (3320, 129952), (3968, 108730), (4061, 106240), (4192, 102920), (4960, 86984), (5146, 83840), (5240, 82336), (5312, 81220), (6640, 64976), (7936, 54365), (8122, 53120), (8384, 51460), (9920, 43492), (10292, 41920), (10480, 41168), (10624, 40610), (10873, 39680), (12865, 33536), (13280, 32488), (16244, 26560), (16768, 25730), (19840, 21746), (20305, 21248), (20584, 20960)]