21195460

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{7411}}^1$

素因数の和:7444

約数の個数: 48

約数和(自身を含む): 52299072

約数和(自身を除く): 31103612

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860, 7411, 14822, 29644, 37055, 74110, 81521, 96343, 148220, 163042, 192686, 326084, 385372, 407605, 481715, 815210, 963430, 1059773, 1630420, 1926860, 2119546, 4239092, 5298865, 10597730, 21195460]

約数ペア:

[(1, 21195460), (2, 10597730), (4, 5298865), (5, 4239092), (10, 2119546), (11, 1926860), (13, 1630420), (20, 1059773), (22, 963430), (26, 815210), (44, 481715), (52, 407605), (55, 385372), (65, 326084), (110, 192686), (130, 163042), (143, 148220), (220, 96343), (260, 81521), (286, 74110), (572, 37055), (715, 29644), (1430, 14822), (2860, 7411)]