21871365

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{137}}^1\times {\mathrm{367}}^1$

素因数の和:541

約数の個数: 32

約数和(自身を含む): 36564480

約数和(自身を除く): 14693115

約数列:

[1, 3, 5, 15, 29, 87, 137, 145, 367, 411, 435, 685, 1101, 1835, 2055, 3973, 5505, 10643, 11919, 19865, 31929, 50279, 53215, 59595, 150837, 159645, 251395, 754185, 1458091, 4374273, 7290455, 21871365]

約数ペア:

[(1, 21871365), (3, 7290455), (5, 4374273), (15, 1458091), (29, 754185), (87, 251395), (137, 159645), (145, 150837), (367, 59595), (411, 53215), (435, 50279), (685, 31929), (1101, 19865), (1835, 11919), (2055, 10643), (3973, 5505)]