21202860

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{2657}}^1$

素因数の和:2695

約数の個数: 96

約数和(自身を含む): 71447040

約数和(自身を除く): 50244180

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 19, 20, 21, 28, 30, 35, 38, 42, 57, 60, 70, 76, 84, 95, 105, 114, 133, 140, 190, 210, 228, 266, 285, 380, 399, 420, 532, 570, 665, 798, 1140, 1330, 1596, 1995, 2657, 2660, 3990, 5314, 7971, 7980, 10628, 13285, 15942, 18599, 26570, 31884, 37198, 39855, 50483, 53140, 55797, 74396, 79710, 92995, 100966, 111594, 151449, 159420, 185990, 201932, 223188, 252415, 278985, 302898, 353381, 371980, 504830, 557970, 605796, 706762, 757245, 1009660, 1060143, 1115940, 1413524, 1514490, 1766905, 2120286, 3028980, 3533810, 4240572, 5300715, 7067620, 10601430, 21202860]

約数ペア:

[(1, 21202860), (2, 10601430), (3, 7067620), (4, 5300715), (5, 4240572), (6, 3533810), (7, 3028980), (10, 2120286), (12, 1766905), (14, 1514490), (15, 1413524), (19, 1115940), (20, 1060143), (21, 1009660), (28, 757245), (30, 706762), (35, 605796), (38, 557970), (42, 504830), (57, 371980), (60, 353381), (70, 302898), (76, 278985), (84, 252415), (95, 223188), (105, 201932), (114, 185990), (133, 159420), (140, 151449), (190, 111594), (210, 100966), (228, 92995), (266, 79710), (285, 74396), (380, 55797), (399, 53140), (420, 50483), (532, 39855), (570, 37198), (665, 31884), (798, 26570), (1140, 18599), (1330, 15942), (1596, 13285), (1995, 10628), (2657, 7980), (2660, 7971), (3990, 5314)]