18913378390

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{389}}^1\times {\mathrm{2531}}^1$

素因数の和:3057

約数の個数: 64

約数和(自身を含む): 36473561280

約数和(自身を除く): 17560182890

約数列:

[1, 2, 5, 10, 17, 34, 85, 113, 170, 226, 389, 565, 778, 1130, 1921, 1945, 2531, 3842, 3890, 5062, 6613, 9605, 12655, 13226, 19210, 25310, 33065, 43027, 43957, 66130, 86054, 87914, 215135, 219785, 286003, 430270, 439570, 572006, 747269, 984559, 1430015, 1494538, 1969118, 2860030, 3736345, 4862051, 4922795, 7472690, 9724102, 9845590, 16737503, 24310255, 33475006, 48620510, 83687515, 111255167, 167375030, 222510334, 556275835, 1112551670, 1891337839, 3782675678, 9456689195, 18913378390]

約数ペア:

[(1, 18913378390), (2, 9456689195), (5, 3782675678), (10, 1891337839), (17, 1112551670), (34, 556275835), (85, 222510334), (113, 167375030), (170, 111255167), (226, 83687515), (389, 48620510), (565, 33475006), (778, 24310255), (1130, 16737503), (1921, 9845590), (1945, 9724102), (2531, 7472690), (3842, 4922795), (3890, 4862051), (5062, 3736345), (6613, 2860030), (9605, 1969118), (12655, 1494538), (13226, 1430015), (19210, 984559), (25310, 747269), (33065, 572006), (43027, 439570), (43957, 430270), (66130, 286003), (86054, 219785), (87914, 215135)]