28490440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{887}}^1$

素因数の和:982

約数の個数: 64

約数和(自身を含む): 70968960

約数和(自身を除く): 42478520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 73, 88, 110, 146, 220, 292, 365, 440, 584, 730, 803, 887, 1460, 1606, 1774, 2920, 3212, 3548, 4015, 4435, 6424, 7096, 8030, 8870, 9757, 16060, 17740, 19514, 32120, 35480, 39028, 48785, 64751, 78056, 97570, 129502, 195140, 259004, 323755, 390280, 518008, 647510, 712261, 1295020, 1424522, 2590040, 2849044, 3561305, 5698088, 7122610, 14245220, 28490440]

約数ペア:

[(1, 28490440), (2, 14245220), (4, 7122610), (5, 5698088), (8, 3561305), (10, 2849044), (11, 2590040), (20, 1424522), (22, 1295020), (40, 712261), (44, 647510), (55, 518008), (73, 390280), (88, 323755), (110, 259004), (146, 195140), (220, 129502), (292, 97570), (365, 78056), (440, 64751), (584, 48785), (730, 39028), (803, 35480), (887, 32120), (1460, 19514), (1606, 17740), (1774, 16060), (2920, 9757), (3212, 8870), (3548, 8030), (4015, 7096), (4435, 6424)]