28306480

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1$

素因数の和:254

約数の個数: 80

約数和(自身を含む): 69040224

約数和(自身を除く): 40733744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 73, 74, 80, 131, 146, 148, 185, 262, 292, 296, 365, 370, 524, 584, 592, 655, 730, 740, 1048, 1168, 1310, 1460, 1480, 2096, 2620, 2701, 2920, 2960, 4847, 5240, 5402, 5840, 9563, 9694, 10480, 10804, 13505, 19126, 19388, 21608, 24235, 27010, 38252, 38776, 43216, 47815, 48470, 54020, 76504, 77552, 95630, 96940, 108040, 153008, 191260, 193880, 216080, 353831, 382520, 387760, 707662, 765040, 1415324, 1769155, 2830648, 3538310, 5661296, 7076620, 14153240, 28306480]

約数ペア:

[(1, 28306480), (2, 14153240), (4, 7076620), (5, 5661296), (8, 3538310), (10, 2830648), (16, 1769155), (20, 1415324), (37, 765040), (40, 707662), (73, 387760), (74, 382520), (80, 353831), (131, 216080), (146, 193880), (148, 191260), (185, 153008), (262, 108040), (292, 96940), (296, 95630), (365, 77552), (370, 76504), (524, 54020), (584, 48470), (592, 47815), (655, 43216), (730, 38776), (740, 38252), (1048, 27010), (1168, 24235), (1310, 21608), (1460, 19388), (1480, 19126), (2096, 13505), (2620, 10804), (2701, 10480), (2920, 9694), (2960, 9563), (4847, 5840), (5240, 5402)]