21319060

素因数分解:

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

素因数の和:193

約数の個数: 96

約数和(自身を含む): 54432000

約数和(自身を除く): 33112940

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 59, 70, 89, 116, 118, 140, 145, 178, 203, 236, 290, 295, 356, 406, 413, 445, 580, 590, 623, 812, 826, 890, 1015, 1180, 1246, 1652, 1711, 1780, 2030, 2065, 2492, 2581, 3115, 3422, 4060, 4130, 5162, 5251, 6230, 6844, 8260, 8555, 10324, 10502, 11977, 12460, 12905, 17110, 18067, 21004, 23954, 25810, 26255, 34220, 36134, 36757, 47908, 51620, 52510, 59885, 72268, 73514, 90335, 105020, 119770, 147028, 152279, 180670, 183785, 239540, 304558, 361340, 367570, 609116, 735140, 761395, 1065953, 1522790, 2131906, 3045580, 4263812, 5329765, 10659530, 21319060]

約数ペア:

[(1, 21319060), (2, 10659530), (4, 5329765), (5, 4263812), (7, 3045580), (10, 2131906), (14, 1522790), (20, 1065953), (28, 761395), (29, 735140), (35, 609116), (58, 367570), (59, 361340), (70, 304558), (89, 239540), (116, 183785), (118, 180670), (140, 152279), (145, 147028), (178, 119770), (203, 105020), (236, 90335), (290, 73514), (295, 72268), (356, 59885), (406, 52510), (413, 51620), (445, 47908), (580, 36757), (590, 36134), (623, 34220), (812, 26255), (826, 25810), (890, 23954), (1015, 21004), (1180, 18067), (1246, 17110), (1652, 12905), (1711, 12460), (1780, 11977), (2030, 10502), (2065, 10324), (2492, 8555), (2581, 8260), (3115, 6844), (3422, 6230), (4060, 5251), (4130, 5162)]