19904520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{4483}}^1$

素因数の和:4534

約数の個数: 64

約数和(自身を含む): 61341120

約数和(自身を除く): 41436600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 37, 40, 60, 74, 111, 120, 148, 185, 222, 296, 370, 444, 555, 740, 888, 1110, 1480, 2220, 4440, 4483, 8966, 13449, 17932, 22415, 26898, 35864, 44830, 53796, 67245, 89660, 107592, 134490, 165871, 179320, 268980, 331742, 497613, 537960, 663484, 829355, 995226, 1326968, 1658710, 1990452, 2488065, 3317420, 3980904, 4976130, 6634840, 9952260, 19904520]

約数ペア:

[(1, 19904520), (2, 9952260), (3, 6634840), (4, 4976130), (5, 3980904), (6, 3317420), (8, 2488065), (10, 1990452), (12, 1658710), (15, 1326968), (20, 995226), (24, 829355), (30, 663484), (37, 537960), (40, 497613), (60, 331742), (74, 268980), (111, 179320), (120, 165871), (148, 134490), (185, 107592), (222, 89660), (296, 67245), (370, 53796), (444, 44830), (555, 35864), (740, 26898), (888, 22415), (1110, 17932), (1480, 13449), (2220, 8966), (4440, 4483)]