18508240

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{439}}^1$

素因数の和:500

約数の個数: 80

約数和(自身を含む): 47139840

約数和(自身を除く): 28631600

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 31, 34, 40, 62, 68, 80, 85, 124, 136, 155, 170, 248, 272, 310, 340, 439, 496, 527, 620, 680, 878, 1054, 1240, 1360, 1756, 2108, 2195, 2480, 2635, 3512, 4216, 4390, 5270, 7024, 7463, 8432, 8780, 10540, 13609, 14926, 17560, 21080, 27218, 29852, 35120, 37315, 42160, 54436, 59704, 68045, 74630, 108872, 119408, 136090, 149260, 217744, 231353, 272180, 298520, 462706, 544360, 597040, 925412, 1088720, 1156765, 1850824, 2313530, 3701648, 4627060, 9254120, 18508240]

約数ペア:

[(1, 18508240), (2, 9254120), (4, 4627060), (5, 3701648), (8, 2313530), (10, 1850824), (16, 1156765), (17, 1088720), (20, 925412), (31, 597040), (34, 544360), (40, 462706), (62, 298520), (68, 272180), (80, 231353), (85, 217744), (124, 149260), (136, 136090), (155, 119408), (170, 108872), (248, 74630), (272, 68045), (310, 59704), (340, 54436), (439, 42160), (496, 37315), (527, 35120), (620, 29852), (680, 27218), (878, 21080), (1054, 17560), (1240, 14926), (1360, 13609), (1756, 10540), (2108, 8780), (2195, 8432), (2480, 7463), (2635, 7024), (3512, 5270), (4216, 4390)]