18938670

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1$

素因数の和:281

約数の個数: 64

約数和(自身を含む): 47139840

約数和(自身を除く): 28201170

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 61, 79, 122, 131, 158, 183, 237, 262, 305, 366, 393, 395, 474, 610, 655, 786, 790, 915, 1185, 1310, 1830, 1965, 2370, 3930, 4819, 7991, 9638, 10349, 14457, 15982, 20698, 23973, 24095, 28914, 31047, 39955, 47946, 48190, 51745, 62094, 72285, 79910, 103490, 119865, 144570, 155235, 239730, 310470, 631289, 1262578, 1893867, 3156445, 3787734, 6312890, 9469335, 18938670]

約数ペア:

[(1, 18938670), (2, 9469335), (3, 6312890), (5, 3787734), (6, 3156445), (10, 1893867), (15, 1262578), (30, 631289), (61, 310470), (79, 239730), (122, 155235), (131, 144570), (158, 119865), (183, 103490), (237, 79910), (262, 72285), (305, 62094), (366, 51745), (393, 48190), (395, 47946), (474, 39955), (610, 31047), (655, 28914), (786, 24095), (790, 23973), (915, 20698), (1185, 15982), (1310, 14457), (1830, 10349), (1965, 9638), (2370, 7991), (3930, 4819)]