180868880

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{72931}}^1$

素因数の和:72975

約数の個数: 40

約数和(自身を含む): 434091264

約数和(自身を除く): 253222384

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 72931, 145862, 291724, 364655, 583448, 729310, 1166896, 1458620, 2260861, 2917240, 4521722, 5834480, 9043444, 11304305, 18086888, 22608610, 36173776, 45217220, 90434440, 180868880]

約数ペア:

[(1, 180868880), (2, 90434440), (4, 45217220), (5, 36173776), (8, 22608610), (10, 18086888), (16, 11304305), (20, 9043444), (31, 5834480), (40, 4521722), (62, 2917240), (80, 2260861), (124, 1458620), (155, 1166896), (248, 729310), (310, 583448), (496, 364655), (620, 291724), (1240, 145862), (2480, 72931)]