402574990

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^2\times {\mathrm{349}}^1$

素因数の和:509

約数の個数: 48

約数和(自身を含む): 762652800

約数和(自身を除く): 360077810

約数列:

[1, 2, 5, 10, 31, 61, 62, 122, 155, 305, 310, 349, 610, 698, 1745, 1891, 3490, 3721, 3782, 7442, 9455, 10819, 18605, 18910, 21289, 21638, 37210, 42578, 54095, 106445, 108190, 115351, 212890, 230702, 576755, 659959, 1153510, 1298629, 1319918, 2597258, 3299795, 6493145, 6599590, 12986290, 40257499, 80514998, 201287495, 402574990]

約数ペア:

[(1, 402574990), (2, 201287495), (5, 80514998), (10, 40257499), (31, 12986290), (61, 6599590), (62, 6493145), (122, 3299795), (155, 2597258), (305, 1319918), (310, 1298629), (349, 1153510), (610, 659959), (698, 576755), (1745, 230702), (1891, 212890), (3490, 115351), (3721, 108190), (3782, 106445), (7442, 54095), (9455, 42578), (10819, 37210), (18605, 21638), (18910, 21289)]