219902620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{22123}}^1$

素因数の和:22210

約数の個数: 48

約数和(自身を含む): 535223808

約数和(自身を除く): 315321188

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, 22123, 44246, 88492, 110615, 154861, 221230, 309722, 442460, 619444, 774305, 1548610, 1570733, 3097220, 3141466, 6282932, 7853665, 10995131, 15707330, 21990262, 31414660, 43980524, 54975655, 109951310, 219902620]

約数ペア:

[(1, 219902620), (2, 109951310), (4, 54975655), (5, 43980524), (7, 31414660), (10, 21990262), (14, 15707330), (20, 10995131), (28, 7853665), (35, 6282932), (70, 3141466), (71, 3097220), (140, 1570733), (142, 1548610), (284, 774305), (355, 619444), (497, 442460), (710, 309722), (994, 221230), (1420, 154861), (1988, 110615), (2485, 88492), (4970, 44246), (9940, 22123)]