1851980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{419}}^1$

素因数の和:458

約数の個数: 48

約数和(自身を含む): 4445280

約数和(自身を除く): 2593300

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 419, 442, 838, 884, 1105, 1676, 2095, 2210, 4190, 4420, 5447, 7123, 8380, 10894, 14246, 21788, 27235, 28492, 35615, 54470, 71230, 92599, 108940, 142460, 185198, 370396, 462995, 925990, 1851980]

約数ペア:

[(1, 1851980), (2, 925990), (4, 462995), (5, 370396), (10, 185198), (13, 142460), (17, 108940), (20, 92599), (26, 71230), (34, 54470), (52, 35615), (65, 28492), (68, 27235), (85, 21788), (130, 14246), (170, 10894), (221, 8380), (260, 7123), (340, 5447), (419, 4420), (442, 4190), (838, 2210), (884, 2095), (1105, 1676)]