21455640

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{557}}^1$

素因数の和:681

約数の個数: 96

約数和(自身を含む): 70508880

約数和(自身を除く): 49053240

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 107, 120, 180, 214, 321, 360, 428, 535, 557, 642, 856, 963, 1070, 1114, 1284, 1605, 1671, 1926, 2140, 2228, 2568, 2785, 3210, 3342, 3852, 4280, 4456, 4815, 5013, 5570, 6420, 6684, 7704, 8355, 9630, 10026, 11140, 12840, 13368, 16710, 19260, 20052, 22280, 25065, 33420, 38520, 40104, 50130, 59599, 66840, 100260, 119198, 178797, 200520, 238396, 297995, 357594, 476792, 536391, 595990, 715188, 893985, 1072782, 1191980, 1430376, 1787970, 2145564, 2383960, 2681955, 3575940, 4291128, 5363910, 7151880, 10727820, 21455640]

約数ペア:

[(1, 21455640), (2, 10727820), (3, 7151880), (4, 5363910), (5, 4291128), (6, 3575940), (8, 2681955), (9, 2383960), (10, 2145564), (12, 1787970), (15, 1430376), (18, 1191980), (20, 1072782), (24, 893985), (30, 715188), (36, 595990), (40, 536391), (45, 476792), (60, 357594), (72, 297995), (90, 238396), (107, 200520), (120, 178797), (180, 119198), (214, 100260), (321, 66840), (360, 59599), (428, 50130), (535, 40104), (557, 38520), (642, 33420), (856, 25065), (963, 22280), (1070, 20052), (1114, 19260), (1284, 16710), (1605, 13368), (1671, 12840), (1926, 11140), (2140, 10026), (2228, 9630), (2568, 8355), (2785, 7704), (3210, 6684), (3342, 6420), (3852, 5570), (4280, 5013), (4456, 4815)]