19530620

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{31}}^1\times {\mathrm{109}}^1$

素因数の和:183

約数の個数: 72

約数和(自身を含む): 45386880

約数和(自身を除く): 25856260

約数列:

[1, 2, 4, 5, 10, 17, 20, 31, 34, 62, 68, 85, 109, 124, 155, 170, 218, 289, 310, 340, 436, 527, 545, 578, 620, 1054, 1090, 1156, 1445, 1853, 2108, 2180, 2635, 2890, 3379, 3706, 5270, 5780, 6758, 7412, 8959, 9265, 10540, 13516, 16895, 17918, 18530, 31501, 33790, 35836, 37060, 44795, 57443, 63002, 67580, 89590, 114886, 126004, 157505, 179180, 229772, 287215, 315010, 574430, 630020, 976531, 1148860, 1953062, 3906124, 4882655, 9765310, 19530620]

約数ペア:

[(1, 19530620), (2, 9765310), (4, 4882655), (5, 3906124), (10, 1953062), (17, 1148860), (20, 976531), (31, 630020), (34, 574430), (62, 315010), (68, 287215), (85, 229772), (109, 179180), (124, 157505), (155, 126004), (170, 114886), (218, 89590), (289, 67580), (310, 63002), (340, 57443), (436, 44795), (527, 37060), (545, 35836), (578, 33790), (620, 31501), (1054, 18530), (1090, 17918), (1156, 16895), (1445, 13516), (1853, 10540), (2108, 9265), (2180, 8959), (2635, 7412), (2890, 6758), (3379, 5780), (3706, 5270)]