21872540

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{2797}}^1$

素因数の和:2846

約数の個数: 48

約数和(自身を含む): 50766912

約数和(自身を除く): 28894372

約数列:

[1, 2, 4, 5, 10, 17, 20, 23, 34, 46, 68, 85, 92, 115, 170, 230, 340, 391, 460, 782, 1564, 1955, 2797, 3910, 5594, 7820, 11188, 13985, 27970, 47549, 55940, 64331, 95098, 128662, 190196, 237745, 257324, 321655, 475490, 643310, 950980, 1093627, 1286620, 2187254, 4374508, 5468135, 10936270, 21872540]

約数ペア:

[(1, 21872540), (2, 10936270), (4, 5468135), (5, 4374508), (10, 2187254), (17, 1286620), (20, 1093627), (23, 950980), (34, 643310), (46, 475490), (68, 321655), (85, 257324), (92, 237745), (115, 190196), (170, 128662), (230, 95098), (340, 64331), (391, 55940), (460, 47549), (782, 27970), (1564, 13985), (1955, 11188), (2797, 7820), (3910, 5594)]