21769820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{971}}^1$

素因数の和:1058

約数の個数: 48

約数和(自身を含む): 48988800

約数和(自身を除く): 27218980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 59, 76, 95, 118, 190, 236, 295, 380, 590, 971, 1121, 1180, 1942, 2242, 3884, 4484, 4855, 5605, 9710, 11210, 18449, 19420, 22420, 36898, 57289, 73796, 92245, 114578, 184490, 229156, 286445, 368980, 572890, 1088491, 1145780, 2176982, 4353964, 5442455, 10884910, 21769820]

約数ペア:

[(1, 21769820), (2, 10884910), (4, 5442455), (5, 4353964), (10, 2176982), (19, 1145780), (20, 1088491), (38, 572890), (59, 368980), (76, 286445), (95, 229156), (118, 184490), (190, 114578), (236, 92245), (295, 73796), (380, 57289), (590, 36898), (971, 22420), (1121, 19420), (1180, 18449), (1942, 11210), (2242, 9710), (3884, 5605), (4484, 4855)]