42638120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1$

素因数の和:195

約数の個数: 128

約数和(自身を含む): 116640000

約数和(自身を除く): 74001880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 35, 40, 56, 58, 59, 70, 89, 116, 118, 140, 145, 178, 203, 232, 236, 280, 290, 295, 356, 406, 413, 445, 472, 580, 590, 623, 712, 812, 826, 890, 1015, 1160, 1180, 1246, 1624, 1652, 1711, 1780, 2030, 2065, 2360, 2492, 2581, 3115, 3304, 3422, 3560, 4060, 4130, 4984, 5162, 5251, 6230, 6844, 8120, 8260, 8555, 10324, 10502, 11977, 12460, 12905, 13688, 16520, 17110, 18067, 20648, 21004, 23954, 24920, 25810, 26255, 34220, 36134, 36757, 42008, 47908, 51620, 52510, 59885, 68440, 72268, 73514, 90335, 95816, 103240, 105020, 119770, 144536, 147028, 152279, 180670, 183785, 210040, 239540, 294056, 304558, 361340, 367570, 479080, 609116, 722680, 735140, 761395, 1065953, 1218232, 1470280, 1522790, 2131906, 3045580, 4263812, 5329765, 6091160, 8527624, 10659530, 21319060, 42638120]

約数ペア:

[(1, 42638120), (2, 21319060), (4, 10659530), (5, 8527624), (7, 6091160), (8, 5329765), (10, 4263812), (14, 3045580), (20, 2131906), (28, 1522790), (29, 1470280), (35, 1218232), (40, 1065953), (56, 761395), (58, 735140), (59, 722680), (70, 609116), (89, 479080), (116, 367570), (118, 361340), (140, 304558), (145, 294056), (178, 239540), (203, 210040), (232, 183785), (236, 180670), (280, 152279), (290, 147028), (295, 144536), (356, 119770), (406, 105020), (413, 103240), (445, 95816), (472, 90335), (580, 73514), (590, 72268), (623, 68440), (712, 59885), (812, 52510), (826, 51620), (890, 47908), (1015, 42008), (1160, 36757), (1180, 36134), (1246, 34220), (1624, 26255), (1652, 25810), (1711, 24920), (1780, 23954), (2030, 21004), (2065, 20648), (2360, 18067), (2492, 17110), (2581, 16520), (3115, 13688), (3304, 12905), (3422, 12460), (3560, 11977), (4060, 10502), (4130, 10324), (4984, 8555), (5162, 8260), (5251, 8120), (6230, 6844)]