81580480

素因数分解:

$2^6\times 5^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{149}}^1$

素因数の和:254

約数の個数: 112

約数和(自身を含む): 205740000

約数和(自身を除く): 124159520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 59, 64, 80, 116, 118, 145, 149, 160, 232, 236, 290, 295, 298, 320, 464, 472, 580, 590, 596, 745, 928, 944, 1160, 1180, 1192, 1490, 1711, 1856, 1888, 2320, 2360, 2384, 2980, 3422, 3776, 4321, 4640, 4720, 4768, 5960, 6844, 8555, 8642, 8791, 9280, 9440, 9536, 11920, 13688, 17110, 17284, 17582, 18880, 21605, 23840, 27376, 34220, 34568, 35164, 43210, 43955, 47680, 54752, 68440, 69136, 70328, 86420, 87910, 109504, 136880, 138272, 140656, 172840, 175820, 254939, 273760, 276544, 281312, 345680, 351640, 509878, 547520, 562624, 691360, 703280, 1019756, 1274695, 1382720, 1406560, 2039512, 2549390, 2813120, 4079024, 5098780, 8158048, 10197560, 16316096, 20395120, 40790240, 81580480]

約数ペア:

[(1, 81580480), (2, 40790240), (4, 20395120), (5, 16316096), (8, 10197560), (10, 8158048), (16, 5098780), (20, 4079024), (29, 2813120), (32, 2549390), (40, 2039512), (58, 1406560), (59, 1382720), (64, 1274695), (80, 1019756), (116, 703280), (118, 691360), (145, 562624), (149, 547520), (160, 509878), (232, 351640), (236, 345680), (290, 281312), (295, 276544), (298, 273760), (320, 254939), (464, 175820), (472, 172840), (580, 140656), (590, 138272), (596, 136880), (745, 109504), (928, 87910), (944, 86420), (1160, 70328), (1180, 69136), (1192, 68440), (1490, 54752), (1711, 47680), (1856, 43955), (1888, 43210), (2320, 35164), (2360, 34568), (2384, 34220), (2980, 27376), (3422, 23840), (3776, 21605), (4321, 18880), (4640, 17582), (4720, 17284), (4768, 17110), (5960, 13688), (6844, 11920), (8555, 9536), (8642, 9440), (8791, 9280)]