13005880

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{157}}^1$

素因数の和:296

約数の個数: 64

約数和(自身を含む): 31284000

約数和(自身を除く): 18278120

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 109, 152, 157, 190, 218, 314, 380, 436, 545, 628, 760, 785, 872, 1090, 1256, 1570, 2071, 2180, 2983, 3140, 4142, 4360, 5966, 6280, 8284, 10355, 11932, 14915, 16568, 17113, 20710, 23864, 29830, 34226, 41420, 59660, 68452, 82840, 85565, 119320, 136904, 171130, 325147, 342260, 650294, 684520, 1300588, 1625735, 2601176, 3251470, 6502940, 13005880]

約数ペア:

[(1, 13005880), (2, 6502940), (4, 3251470), (5, 2601176), (8, 1625735), (10, 1300588), (19, 684520), (20, 650294), (38, 342260), (40, 325147), (76, 171130), (95, 136904), (109, 119320), (152, 85565), (157, 82840), (190, 68452), (218, 59660), (314, 41420), (380, 34226), (436, 29830), (545, 23864), (628, 20710), (760, 17113), (785, 16568), (872, 14915), (1090, 11932), (1256, 10355), (1570, 8284), (2071, 6280), (2180, 5966), (2983, 4360), (3140, 4142)]