21202480

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1$

素因数の和:111

約数の個数: 160

約数和(自身を含む): 59371200

約数和(自身を除く): 38168720

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 29, 37, 38, 40, 52, 58, 65, 74, 76, 80, 95, 104, 116, 130, 145, 148, 152, 185, 190, 208, 232, 247, 260, 290, 296, 304, 370, 377, 380, 464, 481, 494, 520, 551, 580, 592, 703, 740, 754, 760, 962, 988, 1040, 1073, 1102, 1160, 1235, 1406, 1480, 1508, 1520, 1885, 1924, 1976, 2146, 2204, 2320, 2405, 2470, 2755, 2812, 2960, 3016, 3515, 3770, 3848, 3952, 4292, 4408, 4810, 4940, 5365, 5510, 5624, 6032, 7030, 7163, 7540, 7696, 8584, 8816, 9139, 9620, 9880, 10730, 11020, 11248, 13949, 14060, 14326, 15080, 17168, 18278, 19240, 19760, 20387, 21460, 22040, 27898, 28120, 28652, 30160, 35815, 36556, 38480, 40774, 42920, 44080, 45695, 55796, 56240, 57304, 69745, 71630, 73112, 81548, 85840, 91390, 101935, 111592, 114608, 139490, 143260, 146224, 163096, 182780, 203870, 223184, 265031, 278980, 286520, 326192, 365560, 407740, 530062, 557960, 573040, 731120, 815480, 1060124, 1115920, 1325155, 1630960, 2120248, 2650310, 4240496, 5300620, 10601240, 21202480]

約数ペア:

[(1, 21202480), (2, 10601240), (4, 5300620), (5, 4240496), (8, 2650310), (10, 2120248), (13, 1630960), (16, 1325155), (19, 1115920), (20, 1060124), (26, 815480), (29, 731120), (37, 573040), (38, 557960), (40, 530062), (52, 407740), (58, 365560), (65, 326192), (74, 286520), (76, 278980), (80, 265031), (95, 223184), (104, 203870), (116, 182780), (130, 163096), (145, 146224), (148, 143260), (152, 139490), (185, 114608), (190, 111592), (208, 101935), (232, 91390), (247, 85840), (260, 81548), (290, 73112), (296, 71630), (304, 69745), (370, 57304), (377, 56240), (380, 55796), (464, 45695), (481, 44080), (494, 42920), (520, 40774), (551, 38480), (580, 36556), (592, 35815), (703, 30160), (740, 28652), (754, 28120), (760, 27898), (962, 22040), (988, 21460), (1040, 20387), (1073, 19760), (1102, 19240), (1160, 18278), (1235, 17168), (1406, 15080), (1480, 14326), (1508, 14060), (1520, 13949), (1885, 11248), (1924, 11020), (1976, 10730), (2146, 9880), (2204, 9620), (2320, 9139), (2405, 8816), (2470, 8584), (2755, 7696), (2812, 7540), (2960, 7163), (3016, 7030), (3515, 6032), (3770, 5624), (3848, 5510), (3952, 5365), (4292, 4940), (4408, 4810)]