123156920

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1\times {\mathrm{601}}^1$

素因数の和:768

約数の個数: 64

約数和(自身を含む): 286070400

約数和(自身を除く): 162913480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 109, 188, 218, 235, 376, 436, 470, 545, 601, 872, 940, 1090, 1202, 1880, 2180, 2404, 3005, 4360, 4808, 5123, 6010, 10246, 12020, 20492, 24040, 25615, 28247, 40984, 51230, 56494, 65509, 102460, 112988, 131018, 141235, 204920, 225976, 262036, 282470, 327545, 524072, 564940, 655090, 1129880, 1310180, 2620360, 3078923, 6157846, 12315692, 15394615, 24631384, 30789230, 61578460, 123156920]

約数ペア:

[(1, 123156920), (2, 61578460), (4, 30789230), (5, 24631384), (8, 15394615), (10, 12315692), (20, 6157846), (40, 3078923), (47, 2620360), (94, 1310180), (109, 1129880), (188, 655090), (218, 564940), (235, 524072), (376, 327545), (436, 282470), (470, 262036), (545, 225976), (601, 204920), (872, 141235), (940, 131018), (1090, 112988), (1202, 102460), (1880, 65509), (2180, 56494), (2404, 51230), (3005, 40984), (4360, 28247), (4808, 25615), (5123, 24040), (6010, 20492), (10246, 12020)]