20881140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{599}}^1$

素因数の和:701

約数の個数: 96

約数和(自身を含む): 67737600

約数和(自身を除く): 46856460

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 83, 84, 105, 140, 166, 210, 249, 332, 415, 420, 498, 581, 599, 830, 996, 1162, 1198, 1245, 1660, 1743, 1797, 2324, 2396, 2490, 2905, 2995, 3486, 3594, 4193, 4980, 5810, 5990, 6972, 7188, 8386, 8715, 8985, 11620, 11980, 12579, 16772, 17430, 17970, 20965, 25158, 34860, 35940, 41930, 49717, 50316, 62895, 83860, 99434, 125790, 149151, 198868, 248585, 251580, 298302, 348019, 497170, 596604, 696038, 745755, 994340, 1044057, 1392076, 1491510, 1740095, 2088114, 2983020, 3480190, 4176228, 5220285, 6960380, 10440570, 20881140]

約数ペア:

[(1, 20881140), (2, 10440570), (3, 6960380), (4, 5220285), (5, 4176228), (6, 3480190), (7, 2983020), (10, 2088114), (12, 1740095), (14, 1491510), (15, 1392076), (20, 1044057), (21, 994340), (28, 745755), (30, 696038), (35, 596604), (42, 497170), (60, 348019), (70, 298302), (83, 251580), (84, 248585), (105, 198868), (140, 149151), (166, 125790), (210, 99434), (249, 83860), (332, 62895), (415, 50316), (420, 49717), (498, 41930), (581, 35940), (599, 34860), (830, 25158), (996, 20965), (1162, 17970), (1198, 17430), (1245, 16772), (1660, 12579), (1743, 11980), (1797, 11620), (2324, 8985), (2396, 8715), (2490, 8386), (2905, 7188), (2995, 6972), (3486, 5990), (3594, 5810), (4193, 4980)]