21719820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{15739}}^1$

素因数の和:15774

約数の個数: 48

約数和(自身を含む): 63463680

約数和(自身を除く): 41743860

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 46, 60, 69, 92, 115, 138, 230, 276, 345, 460, 690, 1380, 15739, 31478, 47217, 62956, 78695, 94434, 157390, 188868, 236085, 314780, 361997, 472170, 723994, 944340, 1085991, 1447988, 1809985, 2171982, 3619970, 4343964, 5429955, 7239940, 10859910, 21719820]

約数ペア:

[(1, 21719820), (2, 10859910), (3, 7239940), (4, 5429955), (5, 4343964), (6, 3619970), (10, 2171982), (12, 1809985), (15, 1447988), (20, 1085991), (23, 944340), (30, 723994), (46, 472170), (60, 361997), (69, 314780), (92, 236085), (115, 188868), (138, 157390), (230, 94434), (276, 78695), (345, 62956), (460, 47217), (690, 31478), (1380, 15739)]