210360220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{21163}}^1$

素因数の和:21250

約数の個数: 48

約数和(自身を含む): 511999488

約数和(自身を除く): 301639268

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 4970, 9940, 21163, 42326, 84652, 105815, 148141, 211630, 296282, 423260, 592564, 740705, 1481410, 1502573, 2962820, 3005146, 6010292, 7512865, 10518011, 15025730, 21036022, 30051460, 42072044, 52590055, 105180110, 210360220]

約数ペア:

[(1, 210360220), (2, 105180110), (4, 52590055), (5, 42072044), (7, 30051460), (10, 21036022), (14, 15025730), (20, 10518011), (28, 7512865), (35, 6010292), (70, 3005146), (71, 2962820), (140, 1502573), (142, 1481410), (284, 740705), (355, 592564), (497, 423260), (710, 296282), (994, 211630), (1420, 148141), (1988, 105815), (2485, 84652), (4970, 42326), (9940, 21163)]