21638110

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{9791}}^1$

素因数の和:9828

約数の個数: 32

約数和(自身を含む): 44416512

約数和(自身を除く): 22778402

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 221, 442, 1105, 2210, 9791, 19582, 48955, 97910, 127283, 166447, 254566, 332894, 636415, 832235, 1272830, 1664470, 2163811, 4327622, 10819055, 21638110]

約数ペア:

[(1, 21638110), (2, 10819055), (5, 4327622), (10, 2163811), (13, 1664470), (17, 1272830), (26, 832235), (34, 636415), (65, 332894), (85, 254566), (130, 166447), (170, 127283), (221, 97910), (442, 48955), (1105, 19582), (2210, 9791)]