64701220

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{163}}^1\times {\mathrm{223}}^1$

素因数の和:484

約数の個数: 48

約数和(自身を含む): 138862080

約数和(自身を除く): 74160860

約数列:

[1, 2, 4, 5, 10, 20, 89, 163, 178, 223, 326, 356, 445, 446, 652, 815, 890, 892, 1115, 1630, 1780, 2230, 3260, 4460, 14507, 19847, 29014, 36349, 39694, 58028, 72535, 72698, 79388, 99235, 145070, 145396, 181745, 198470, 290140, 363490, 396940, 726980, 3235061, 6470122, 12940244, 16175305, 32350610, 64701220]

約数ペア:

[(1, 64701220), (2, 32350610), (4, 16175305), (5, 12940244), (10, 6470122), (20, 3235061), (89, 726980), (163, 396940), (178, 363490), (223, 290140), (326, 198470), (356, 181745), (445, 145396), (446, 145070), (652, 99235), (815, 79388), (890, 72698), (892, 72535), (1115, 58028), (1630, 39694), (1780, 36349), (2230, 29014), (3260, 19847), (4460, 14507)]