21187785

素因数分解:

$3^1\times 5^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1\times {\mathrm{269}}^1$

素因数の和:425

約数の個数: 32

約数和(自身を含む): 34992000

約数和(自身を除く): 13804215

約数列:

[1, 3, 5, 15, 59, 89, 177, 267, 269, 295, 445, 807, 885, 1335, 1345, 4035, 5251, 15753, 15871, 23941, 26255, 47613, 71823, 78765, 79355, 119705, 238065, 359115, 1412519, 4237557, 7062595, 21187785]

約数ペア:

[(1, 21187785), (3, 7062595), (5, 4237557), (15, 1412519), (59, 359115), (89, 238065), (177, 119705), (267, 79355), (269, 78765), (295, 71823), (445, 47613), (807, 26255), (885, 23941), (1335, 15871), (1345, 15753), (4035, 5251)]