20227280

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{139}}^1$

素因数の和:276

約数の個数: 80

約数和(自身を含む): 50621760

約数和(自身を除く): 30394480

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 107, 136, 139, 170, 214, 272, 278, 340, 428, 535, 556, 680, 695, 856, 1070, 1112, 1360, 1390, 1712, 1819, 2140, 2224, 2363, 2780, 3638, 4280, 4726, 5560, 7276, 8560, 9095, 9452, 11120, 11815, 14552, 14873, 18190, 18904, 23630, 29104, 29746, 36380, 37808, 47260, 59492, 72760, 74365, 94520, 118984, 145520, 148730, 189040, 237968, 252841, 297460, 505682, 594920, 1011364, 1189840, 1264205, 2022728, 2528410, 4045456, 5056820, 10113640, 20227280]

約数ペア:

[(1, 20227280), (2, 10113640), (4, 5056820), (5, 4045456), (8, 2528410), (10, 2022728), (16, 1264205), (17, 1189840), (20, 1011364), (34, 594920), (40, 505682), (68, 297460), (80, 252841), (85, 237968), (107, 189040), (136, 148730), (139, 145520), (170, 118984), (214, 94520), (272, 74365), (278, 72760), (340, 59492), (428, 47260), (535, 37808), (556, 36380), (680, 29746), (695, 29104), (856, 23630), (1070, 18904), (1112, 18190), (1360, 14873), (1390, 14552), (1712, 11815), (1819, 11120), (2140, 9452), (2224, 9095), (2363, 8560), (2780, 7276), (3638, 5560), (4280, 4726)]