1637240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^2$

素因数の和:144

約数の個数: 48

約数和(自身を含む): 4085640

約数和(自身を除く): 2448400

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 61, 88, 110, 122, 220, 244, 305, 440, 488, 610, 671, 1220, 1342, 2440, 2684, 3355, 3721, 5368, 6710, 7442, 13420, 14884, 18605, 26840, 29768, 37210, 40931, 74420, 81862, 148840, 163724, 204655, 327448, 409310, 818620, 1637240]

約数ペア:

[(1, 1637240), (2, 818620), (4, 409310), (5, 327448), (8, 204655), (10, 163724), (11, 148840), (20, 81862), (22, 74420), (40, 40931), (44, 37210), (55, 29768), (61, 26840), (88, 18605), (110, 14884), (122, 13420), (220, 7442), (244, 6710), (305, 5368), (440, 3721), (488, 3355), (610, 2684), (671, 2440), (1220, 1342)]