312408020

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1\times {\mathrm{2689}}^1$

素因数の和:2892

約数の個数: 48

約数和(自身を含む): 678331920

約数和(自身を除く): 365923900

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 157, 185, 314, 370, 628, 740, 785, 1570, 2689, 3140, 5378, 5809, 10756, 11618, 13445, 23236, 26890, 29045, 53780, 58090, 99493, 116180, 198986, 397972, 422173, 497465, 844346, 994930, 1688692, 1989860, 2110865, 4221730, 8443460, 15620401, 31240802, 62481604, 78102005, 156204010, 312408020]

約数ペア:

[(1, 312408020), (2, 156204010), (4, 78102005), (5, 62481604), (10, 31240802), (20, 15620401), (37, 8443460), (74, 4221730), (148, 2110865), (157, 1989860), (185, 1688692), (314, 994930), (370, 844346), (628, 497465), (740, 422173), (785, 397972), (1570, 198986), (2689, 116180), (3140, 99493), (5378, 58090), (5809, 53780), (10756, 29045), (11618, 26890), (13445, 23236)]