21197540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{613}}^1$

素因数の和:661

約数の個数: 96

約数和(自身を含む): 57765120

約数和(自身を除く): 36567580

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 19, 20, 26, 28, 35, 38, 52, 65, 70, 76, 91, 95, 130, 133, 140, 182, 190, 247, 260, 266, 364, 380, 455, 494, 532, 613, 665, 910, 988, 1226, 1235, 1330, 1729, 1820, 2452, 2470, 2660, 3065, 3458, 4291, 4940, 6130, 6916, 7969, 8582, 8645, 11647, 12260, 15938, 17164, 17290, 21455, 23294, 31876, 34580, 39845, 42910, 46588, 55783, 58235, 79690, 81529, 85820, 111566, 116470, 151411, 159380, 163058, 223132, 232940, 278915, 302822, 326116, 407645, 557830, 605644, 757055, 815290, 1059877, 1115660, 1514110, 1630580, 2119754, 3028220, 4239508, 5299385, 10598770, 21197540]

約数ペア:

[(1, 21197540), (2, 10598770), (4, 5299385), (5, 4239508), (7, 3028220), (10, 2119754), (13, 1630580), (14, 1514110), (19, 1115660), (20, 1059877), (26, 815290), (28, 757055), (35, 605644), (38, 557830), (52, 407645), (65, 326116), (70, 302822), (76, 278915), (91, 232940), (95, 223132), (130, 163058), (133, 159380), (140, 151411), (182, 116470), (190, 111566), (247, 85820), (260, 81529), (266, 79690), (364, 58235), (380, 55783), (455, 46588), (494, 42910), (532, 39845), (613, 34580), (665, 31876), (910, 23294), (988, 21455), (1226, 17290), (1235, 17164), (1330, 15938), (1729, 12260), (1820, 11647), (2452, 8645), (2470, 8582), (2660, 7969), (3065, 6916), (3458, 6130), (4291, 4940)]