21373575

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{283}}^1$

素因数の和:368

約数の個数: 48

約数和(自身を含む): 38033280

約数和(自身を除く): 16659705

約数列:

[1, 3, 5, 15, 19, 25, 53, 57, 75, 95, 159, 265, 283, 285, 475, 795, 849, 1007, 1325, 1415, 1425, 3021, 3975, 4245, 5035, 5377, 7075, 14999, 15105, 16131, 21225, 25175, 26885, 44997, 74995, 75525, 80655, 134425, 224985, 284981, 374975, 403275, 854943, 1124925, 1424905, 4274715, 7124525, 21373575]

約数ペア:

[(1, 21373575), (3, 7124525), (5, 4274715), (15, 1424905), (19, 1124925), (25, 854943), (53, 403275), (57, 374975), (75, 284981), (95, 224985), (159, 134425), (265, 80655), (283, 75525), (285, 74995), (475, 44997), (795, 26885), (849, 25175), (1007, 21225), (1325, 16131), (1415, 15105), (1425, 14999), (3021, 7075), (3975, 5377), (4245, 5035)]