19990333040

素因数分解:

$2^4\times 5^1\times {\mathrm{163}}^1\times {\mathrm{241}}^1\times {\mathrm{6361}}^1$

素因数の和:6778

約数の個数: 80

約数和(自身を含む): 46964080416

約数和(自身を除く): 26973747376

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 163, 241, 326, 482, 652, 815, 964, 1205, 1304, 1630, 1928, 2410, 2608, 3260, 3856, 4820, 6361, 6520, 9640, 12722, 13040, 19280, 25444, 31805, 39283, 50888, 63610, 78566, 101776, 127220, 157132, 196415, 254440, 314264, 392830, 508880, 628528, 785660, 1036843, 1533001, 1571320, 2073686, 3066002, 3142640, 4147372, 5184215, 6132004, 7665005, 8294744, 10368430, 12264008, 15330010, 16589488, 20736860, 24528016, 30660020, 41473720, 61320040, 82947440, 122640080, 249879163, 499758326, 999516652, 1249395815, 1999033304, 2498791630, 3998066608, 4997583260, 9995166520, 19990333040]

約数ペア:

[(1, 19990333040), (2, 9995166520), (4, 4997583260), (5, 3998066608), (8, 2498791630), (10, 1999033304), (16, 1249395815), (20, 999516652), (40, 499758326), (80, 249879163), (163, 122640080), (241, 82947440), (326, 61320040), (482, 41473720), (652, 30660020), (815, 24528016), (964, 20736860), (1205, 16589488), (1304, 15330010), (1630, 12264008), (1928, 10368430), (2410, 8294744), (2608, 7665005), (3260, 6132004), (3856, 5184215), (4820, 4147372), (6361, 3142640), (6520, 3066002), (9640, 2073686), (12722, 1571320), (13040, 1533001), (19280, 1036843), (25444, 785660), (31805, 628528), (39283, 508880), (50888, 392830), (63610, 314264), (78566, 254440), (101776, 196415), (127220, 157132)]