21903820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{2801}}^1$

素因数の和:2850

約数の個数: 48

約数和(自身を含む): 50839488

約数和(自身を除く): 28935668

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, 2801, 3910, 5602, 7820, 11204, 14005, 28010, 47617, 56020, 64423, 95234, 128846, 190468, 238085, 257692, 322115, 476170, 644230, 952340, 1095191, 1288460, 2190382, 4380764, 5475955, 10951910, 21903820]

約数ペア:

[(1, 21903820), (2, 10951910), (4, 5475955), (5, 4380764), (10, 2190382), (17, 1288460), (20, 1095191), (23, 952340), (34, 644230), (46, 476170), (68, 322115), (85, 257692), (92, 238085), (115, 190468), (170, 128846), (230, 95234), (340, 64423), (391, 56020), (460, 47617), (782, 28010), (1564, 14005), (1955, 11204), (2801, 7820), (3910, 5602)]