18117640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{769}}^1$

素因数の和:830

約数の個数: 64

約数和(自身を含む): 44352000

約数和(自身を除く): 26234360

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 31, 38, 40, 62, 76, 95, 124, 152, 155, 190, 248, 310, 380, 589, 620, 760, 769, 1178, 1240, 1538, 2356, 2945, 3076, 3845, 4712, 5890, 6152, 7690, 11780, 14611, 15380, 23560, 23839, 29222, 30760, 47678, 58444, 73055, 95356, 116888, 119195, 146110, 190712, 238390, 292220, 452941, 476780, 584440, 905882, 953560, 1811764, 2264705, 3623528, 4529410, 9058820, 18117640]

約数ペア:

[(1, 18117640), (2, 9058820), (4, 4529410), (5, 3623528), (8, 2264705), (10, 1811764), (19, 953560), (20, 905882), (31, 584440), (38, 476780), (40, 452941), (62, 292220), (76, 238390), (95, 190712), (124, 146110), (152, 119195), (155, 116888), (190, 95356), (248, 73055), (310, 58444), (380, 47678), (589, 30760), (620, 29222), (760, 23839), (769, 23560), (1178, 15380), (1240, 14611), (1538, 11780), (2356, 7690), (2945, 6152), (3076, 5890), (3845, 4712)]