21491730

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{157}}^1$

素因数の和:202

約数の個数: 120

約数和(自身を含む): 62974692

約数和(自身を除く): 41482962

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 27, 30, 39, 45, 54, 65, 78, 81, 90, 117, 130, 135, 157, 162, 169, 195, 234, 270, 314, 338, 351, 390, 405, 471, 507, 585, 702, 785, 810, 845, 942, 1014, 1053, 1170, 1413, 1521, 1570, 1690, 1755, 2041, 2106, 2355, 2535, 2826, 3042, 3510, 4082, 4239, 4563, 4710, 5070, 5265, 6123, 7065, 7605, 8478, 9126, 10205, 10530, 12246, 12717, 13689, 14130, 15210, 18369, 20410, 21195, 22815, 25434, 26533, 27378, 30615, 36738, 42390, 45630, 53066, 55107, 61230, 63585, 68445, 79599, 91845, 110214, 127170, 132665, 136890, 159198, 165321, 183690, 238797, 265330, 275535, 330642, 397995, 477594, 551070, 716391, 795990, 826605, 1193985, 1432782, 1653210, 2149173, 2387970, 3581955, 4298346, 7163910, 10745865, 21491730]

約数ペア:

[(1, 21491730), (2, 10745865), (3, 7163910), (5, 4298346), (6, 3581955), (9, 2387970), (10, 2149173), (13, 1653210), (15, 1432782), (18, 1193985), (26, 826605), (27, 795990), (30, 716391), (39, 551070), (45, 477594), (54, 397995), (65, 330642), (78, 275535), (81, 265330), (90, 238797), (117, 183690), (130, 165321), (135, 159198), (157, 136890), (162, 132665), (169, 127170), (195, 110214), (234, 91845), (270, 79599), (314, 68445), (338, 63585), (351, 61230), (390, 55107), (405, 53066), (471, 45630), (507, 42390), (585, 36738), (702, 30615), (785, 27378), (810, 26533), (845, 25434), (942, 22815), (1014, 21195), (1053, 20410), (1170, 18369), (1413, 15210), (1521, 14130), (1570, 13689), (1690, 12717), (1755, 12246), (2041, 10530), (2106, 10205), (2355, 9126), (2535, 8478), (2826, 7605), (3042, 7065), (3510, 6123), (4082, 5265), (4239, 5070), (4563, 4710)]