20941620

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{419}}^1$

素因数の和:462

約数の個数: 144

約数和(自身を含む): 72394560

約数和(自身を除く): 51452940

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 17, 20, 21, 28, 30, 34, 35, 42, 49, 51, 60, 68, 70, 84, 85, 98, 102, 105, 119, 140, 147, 170, 196, 204, 210, 238, 245, 255, 294, 340, 357, 419, 420, 476, 490, 510, 588, 595, 714, 735, 833, 838, 980, 1020, 1190, 1257, 1428, 1470, 1666, 1676, 1785, 2095, 2380, 2499, 2514, 2933, 2940, 3332, 3570, 4165, 4190, 4998, 5028, 5866, 6285, 7123, 7140, 8330, 8380, 8799, 9996, 11732, 12495, 12570, 14246, 14665, 16660, 17598, 20531, 21369, 24990, 25140, 28492, 29330, 35196, 35615, 41062, 42738, 43995, 49861, 49980, 58660, 61593, 71230, 82124, 85476, 87990, 99722, 102655, 106845, 123186, 142460, 149583, 175980, 199444, 205310, 213690, 246372, 249305, 299166, 307965, 349027, 410620, 427380, 498610, 598332, 615930, 698054, 747915, 997220, 1047081, 1231860, 1396108, 1495830, 1745135, 2094162, 2991660, 3490270, 4188324, 5235405, 6980540, 10470810, 20941620]

約数ペア:

[(1, 20941620), (2, 10470810), (3, 6980540), (4, 5235405), (5, 4188324), (6, 3490270), (7, 2991660), (10, 2094162), (12, 1745135), (14, 1495830), (15, 1396108), (17, 1231860), (20, 1047081), (21, 997220), (28, 747915), (30, 698054), (34, 615930), (35, 598332), (42, 498610), (49, 427380), (51, 410620), (60, 349027), (68, 307965), (70, 299166), (84, 249305), (85, 246372), (98, 213690), (102, 205310), (105, 199444), (119, 175980), (140, 149583), (147, 142460), (170, 123186), (196, 106845), (204, 102655), (210, 99722), (238, 87990), (245, 85476), (255, 82124), (294, 71230), (340, 61593), (357, 58660), (419, 49980), (420, 49861), (476, 43995), (490, 42738), (510, 41062), (588, 35615), (595, 35196), (714, 29330), (735, 28492), (833, 25140), (838, 24990), (980, 21369), (1020, 20531), (1190, 17598), (1257, 16660), (1428, 14665), (1470, 14246), (1666, 12570), (1676, 12495), (1785, 11732), (2095, 9996), (2380, 8799), (2499, 8380), (2514, 8330), (2933, 7140), (2940, 7123), (3332, 6285), (3570, 5866), (4165, 5028), (4190, 4998)]