16807780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{4021}}^1$

素因数の和:4060

約数の個数: 48

約数和(自身を含む): 40541760

約数和(自身を除く): 23733980

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 380, 418, 836, 1045, 2090, 4021, 4180, 8042, 16084, 20105, 40210, 44231, 76399, 80420, 88462, 152798, 176924, 221155, 305596, 381995, 442310, 763990, 840389, 884620, 1527980, 1680778, 3361556, 4201945, 8403890, 16807780]

約数ペア:

[(1, 16807780), (2, 8403890), (4, 4201945), (5, 3361556), (10, 1680778), (11, 1527980), (19, 884620), (20, 840389), (22, 763990), (38, 442310), (44, 381995), (55, 305596), (76, 221155), (95, 176924), (110, 152798), (190, 88462), (209, 80420), (220, 76399), (380, 44231), (418, 40210), (836, 20105), (1045, 16084), (2090, 8042), (4021, 4180)]