78234860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{1787}}^1$

素因数の和:2006

約数の個数: 48

約数和(自身を含む): 180230400

約数和(自身を除く): 101995540

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 199, 220, 398, 796, 995, 1787, 1990, 2189, 3574, 3980, 4378, 7148, 8756, 8935, 10945, 17870, 19657, 21890, 35740, 39314, 43780, 78628, 98285, 196570, 355613, 393140, 711226, 1422452, 1778065, 3556130, 3911743, 7112260, 7823486, 15646972, 19558715, 39117430, 78234860]

約数ペア:

[(1, 78234860), (2, 39117430), (4, 19558715), (5, 15646972), (10, 7823486), (11, 7112260), (20, 3911743), (22, 3556130), (44, 1778065), (55, 1422452), (110, 711226), (199, 393140), (220, 355613), (398, 196570), (796, 98285), (995, 78628), (1787, 43780), (1990, 39314), (2189, 35740), (3574, 21890), (3980, 19657), (4378, 17870), (7148, 10945), (8756, 8935)]