28887560

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{761}}^1$

素因数の和:858

約数の個数: 64

約数和(自身を含む): 71048880

約数和(自身を除く): 42161320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 73, 104, 130, 146, 260, 292, 365, 520, 584, 730, 761, 949, 1460, 1522, 1898, 2920, 3044, 3796, 3805, 4745, 6088, 7592, 7610, 9490, 9893, 15220, 18980, 19786, 30440, 37960, 39572, 49465, 55553, 79144, 98930, 111106, 197860, 222212, 277765, 395720, 444424, 555530, 722189, 1111060, 1444378, 2222120, 2888756, 3610945, 5777512, 7221890, 14443780, 28887560]

約数ペア:

[(1, 28887560), (2, 14443780), (4, 7221890), (5, 5777512), (8, 3610945), (10, 2888756), (13, 2222120), (20, 1444378), (26, 1111060), (40, 722189), (52, 555530), (65, 444424), (73, 395720), (104, 277765), (130, 222212), (146, 197860), (260, 111106), (292, 98930), (365, 79144), (520, 55553), (584, 49465), (730, 39572), (761, 37960), (949, 30440), (1460, 19786), (1522, 18980), (1898, 15220), (2920, 9893), (3044, 9490), (3796, 7610), (3805, 7592), (4745, 6088)]