211851220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{21313}}^1$

素因数の和:21400

約数の個数: 48

約数和(自身を含む): 515628288

約数和(自身を除く): 303777068

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, 21313, 42626, 85252, 106565, 149191, 213130, 298382, 426260, 596764, 745955, 1491910, 1513223, 2983820, 3026446, 6052892, 7566115, 10592561, 15132230, 21185122, 30264460, 42370244, 52962805, 105925610, 211851220]

約数ペア:

[(1, 211851220), (2, 105925610), (4, 52962805), (5, 42370244), (7, 30264460), (10, 21185122), (14, 15132230), (20, 10592561), (28, 7566115), (35, 6052892), (70, 3026446), (71, 2983820), (140, 1513223), (142, 1491910), (284, 745955), (355, 596764), (497, 426260), (710, 298382), (994, 213130), (1420, 149191), (1988, 106565), (2485, 85252), (4970, 42626), (9940, 21313)]