20851260

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1$

素因数の和:227

約数の個数: 96

約数和(自身を含む): 60963840

約数和(自身を除く): 40112580

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 53, 60, 79, 83, 106, 158, 159, 166, 212, 237, 249, 265, 316, 318, 332, 395, 415, 474, 498, 530, 636, 790, 795, 830, 948, 996, 1060, 1185, 1245, 1580, 1590, 1660, 2370, 2490, 3180, 4187, 4399, 4740, 4980, 6557, 8374, 8798, 12561, 13114, 13197, 16748, 17596, 19671, 20935, 21995, 25122, 26228, 26394, 32785, 39342, 41870, 43990, 50244, 52788, 62805, 65570, 65985, 78684, 83740, 87980, 98355, 125610, 131140, 131970, 196710, 251220, 263940, 347521, 393420, 695042, 1042563, 1390084, 1737605, 2085126, 3475210, 4170252, 5212815, 6950420, 10425630, 20851260]

約数ペア:

[(1, 20851260), (2, 10425630), (3, 6950420), (4, 5212815), (5, 4170252), (6, 3475210), (10, 2085126), (12, 1737605), (15, 1390084), (20, 1042563), (30, 695042), (53, 393420), (60, 347521), (79, 263940), (83, 251220), (106, 196710), (158, 131970), (159, 131140), (166, 125610), (212, 98355), (237, 87980), (249, 83740), (265, 78684), (316, 65985), (318, 65570), (332, 62805), (395, 52788), (415, 50244), (474, 43990), (498, 41870), (530, 39342), (636, 32785), (790, 26394), (795, 26228), (830, 25122), (948, 21995), (996, 20935), (1060, 19671), (1185, 17596), (1245, 16748), (1580, 13197), (1590, 13114), (1660, 12561), (2370, 8798), (2490, 8374), (3180, 6557), (4187, 4980), (4399, 4740)]