210906920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{103}}^2$

素因数の和:295

約数の個数: 96

約数和(自身を含む): 555361920

約数和(自身を除く): 344455000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 71, 103, 140, 142, 206, 280, 284, 355, 412, 497, 515, 568, 710, 721, 824, 994, 1030, 1420, 1442, 1988, 2060, 2485, 2840, 2884, 3605, 3976, 4120, 4970, 5768, 7210, 7313, 9940, 10609, 14420, 14626, 19880, 21218, 28840, 29252, 36565, 42436, 51191, 53045, 58504, 73130, 74263, 84872, 102382, 106090, 146260, 148526, 204764, 212180, 255955, 292520, 297052, 371315, 409528, 424360, 511910, 594104, 742630, 753239, 1023820, 1485260, 1506478, 2047640, 2970520, 3012956, 3766195, 5272673, 6025912, 7532390, 10545346, 15064780, 21090692, 26363365, 30129560, 42181384, 52726730, 105453460, 210906920]

約数ペア:

[(1, 210906920), (2, 105453460), (4, 52726730), (5, 42181384), (7, 30129560), (8, 26363365), (10, 21090692), (14, 15064780), (20, 10545346), (28, 7532390), (35, 6025912), (40, 5272673), (56, 3766195), (70, 3012956), (71, 2970520), (103, 2047640), (140, 1506478), (142, 1485260), (206, 1023820), (280, 753239), (284, 742630), (355, 594104), (412, 511910), (497, 424360), (515, 409528), (568, 371315), (710, 297052), (721, 292520), (824, 255955), (994, 212180), (1030, 204764), (1420, 148526), (1442, 146260), (1988, 106090), (2060, 102382), (2485, 84872), (2840, 74263), (2884, 73130), (3605, 58504), (3976, 53045), (4120, 51191), (4970, 42436), (5768, 36565), (7210, 29252), (7313, 28840), (9940, 21218), (10609, 19880), (14420, 14626)]