21203910

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{863}}^1$

素因数の和:899

約数の個数: 128

約数和(自身を含む): 69672960

約数和(自身を除く): 48469050

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 13, 14, 15, 18, 21, 26, 27, 30, 35, 39, 42, 45, 54, 63, 65, 70, 78, 90, 91, 105, 117, 126, 130, 135, 182, 189, 195, 210, 234, 270, 273, 315, 351, 378, 390, 455, 546, 585, 630, 702, 819, 863, 910, 945, 1170, 1365, 1638, 1726, 1755, 1890, 2457, 2589, 2730, 3510, 4095, 4315, 4914, 5178, 6041, 7767, 8190, 8630, 11219, 12082, 12285, 12945, 15534, 18123, 22438, 23301, 24570, 25890, 30205, 33657, 36246, 38835, 46602, 54369, 56095, 60410, 67314, 77670, 78533, 90615, 100971, 108738, 112190, 116505, 157066, 163107, 168285, 181230, 201942, 233010, 235599, 271845, 302913, 326214, 336570, 392665, 471198, 504855, 543690, 605826, 706797, 785330, 815535, 1009710, 1177995, 1413594, 1514565, 1631070, 2120391, 2355990, 3029130, 3533985, 4240782, 7067970, 10601955, 21203910]

約数ペア:

[(1, 21203910), (2, 10601955), (3, 7067970), (5, 4240782), (6, 3533985), (7, 3029130), (9, 2355990), (10, 2120391), (13, 1631070), (14, 1514565), (15, 1413594), (18, 1177995), (21, 1009710), (26, 815535), (27, 785330), (30, 706797), (35, 605826), (39, 543690), (42, 504855), (45, 471198), (54, 392665), (63, 336570), (65, 326214), (70, 302913), (78, 271845), (90, 235599), (91, 233010), (105, 201942), (117, 181230), (126, 168285), (130, 163107), (135, 157066), (182, 116505), (189, 112190), (195, 108738), (210, 100971), (234, 90615), (270, 78533), (273, 77670), (315, 67314), (351, 60410), (378, 56095), (390, 54369), (455, 46602), (546, 38835), (585, 36246), (630, 33657), (702, 30205), (819, 25890), (863, 24570), (910, 23301), (945, 22438), (1170, 18123), (1365, 15534), (1638, 12945), (1726, 12285), (1755, 12082), (1890, 11219), (2457, 8630), (2589, 8190), (2730, 7767), (3510, 6041), (4095, 5178), (4315, 4914)]