399488960

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^2\times {\mathrm{83}}^1\times {\mathrm{89}}^1$

素因数の和:215

約数の個数: 168

約数和(自身を含む): 1054211760

約数和(自身を除く): 654722800

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 83, 89, 104, 130, 160, 166, 169, 178, 208, 260, 320, 332, 338, 356, 415, 416, 445, 520, 664, 676, 712, 830, 832, 845, 890, 1040, 1079, 1157, 1328, 1352, 1424, 1660, 1690, 1780, 2080, 2158, 2314, 2656, 2704, 2848, 3320, 3380, 3560, 4160, 4316, 4628, 5312, 5395, 5408, 5696, 5785, 6640, 6760, 7120, 7387, 8632, 9256, 10790, 10816, 11570, 13280, 13520, 14027, 14240, 14774, 15041, 17264, 18512, 21580, 23140, 26560, 27040, 28054, 28480, 29548, 30082, 34528, 36935, 37024, 43160, 46280, 54080, 56108, 59096, 60164, 69056, 70135, 73870, 74048, 75205, 86320, 92560, 96031, 112216, 118192, 120328, 140270, 147740, 150410, 172640, 185120, 192062, 224432, 236384, 240656, 280540, 295480, 300820, 345280, 370240, 384124, 448864, 472768, 480155, 481312, 561080, 590960, 601640, 768248, 897728, 960310, 962624, 1122160, 1181920, 1203280, 1248403, 1536496, 1920620, 2244320, 2363840, 2406560, 2496806, 3072992, 3841240, 4488640, 4813120, 4993612, 6145984, 6242015, 7682480, 9987224, 12484030, 15364960, 19974448, 24968060, 30729920, 39948896, 49936120, 79897792, 99872240, 199744480, 399488960]

約数ペア:

[(1, 399488960), (2, 199744480), (4, 99872240), (5, 79897792), (8, 49936120), (10, 39948896), (13, 30729920), (16, 24968060), (20, 19974448), (26, 15364960), (32, 12484030), (40, 9987224), (52, 7682480), (64, 6242015), (65, 6145984), (80, 4993612), (83, 4813120), (89, 4488640), (104, 3841240), (130, 3072992), (160, 2496806), (166, 2406560), (169, 2363840), (178, 2244320), (208, 1920620), (260, 1536496), (320, 1248403), (332, 1203280), (338, 1181920), (356, 1122160), (415, 962624), (416, 960310), (445, 897728), (520, 768248), (664, 601640), (676, 590960), (712, 561080), (830, 481312), (832, 480155), (845, 472768), (890, 448864), (1040, 384124), (1079, 370240), (1157, 345280), (1328, 300820), (1352, 295480), (1424, 280540), (1660, 240656), (1690, 236384), (1780, 224432), (2080, 192062), (2158, 185120), (2314, 172640), (2656, 150410), (2704, 147740), (2848, 140270), (3320, 120328), (3380, 118192), (3560, 112216), (4160, 96031), (4316, 92560), (4628, 86320), (5312, 75205), (5395, 74048), (5408, 73870), (5696, 70135), (5785, 69056), (6640, 60164), (6760, 59096), (7120, 56108), (7387, 54080), (8632, 46280), (9256, 43160), (10790, 37024), (10816, 36935), (11570, 34528), (13280, 30082), (13520, 29548), (14027, 28480), (14240, 28054), (14774, 27040), (15041, 26560), (17264, 23140), (18512, 21580)]