19555240

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{181}}^1$

素因数の和:302

約数の個数: 64

約数和(自身を含む): 46060560

約数和(自身を除く): 26505320

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 73, 74, 146, 148, 181, 185, 292, 296, 362, 365, 370, 584, 724, 730, 740, 905, 1448, 1460, 1480, 1810, 2701, 2920, 3620, 5402, 6697, 7240, 10804, 13213, 13394, 13505, 21608, 26426, 26788, 27010, 33485, 52852, 53576, 54020, 66065, 66970, 105704, 108040, 132130, 133940, 264260, 267880, 488881, 528520, 977762, 1955524, 2444405, 3911048, 4888810, 9777620, 19555240]

約数ペア:

[(1, 19555240), (2, 9777620), (4, 4888810), (5, 3911048), (8, 2444405), (10, 1955524), (20, 977762), (37, 528520), (40, 488881), (73, 267880), (74, 264260), (146, 133940), (148, 132130), (181, 108040), (185, 105704), (292, 66970), (296, 66065), (362, 54020), (365, 53576), (370, 52852), (584, 33485), (724, 27010), (730, 26788), (740, 26426), (905, 21608), (1448, 13505), (1460, 13394), (1480, 13213), (1810, 10804), (2701, 7240), (2920, 6697), (3620, 5402)]