8129720

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{563}}^1$

素因数の和:612

約数の個数: 48

約数和(自身を含む): 19339560

約数和(自身を除く): 11209840

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 361, 380, 563, 722, 760, 1126, 1444, 1805, 2252, 2815, 2888, 3610, 4504, 5630, 7220, 10697, 11260, 14440, 21394, 22520, 42788, 53485, 85576, 106970, 203243, 213940, 406486, 427880, 812972, 1016215, 1625944, 2032430, 4064860, 8129720]

約数ペア:

[(1, 8129720), (2, 4064860), (4, 2032430), (5, 1625944), (8, 1016215), (10, 812972), (19, 427880), (20, 406486), (38, 213940), (40, 203243), (76, 106970), (95, 85576), (152, 53485), (190, 42788), (361, 22520), (380, 21394), (563, 14440), (722, 11260), (760, 10697), (1126, 7220), (1444, 5630), (1805, 4504), (2252, 3610), (2815, 2888)]