21914175

素因数分解:

$3^1\times 5^2\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{149}}^1$

素因数の和:252

約数の個数: 48

約数和(自身を含む): 38167200

約数和(自身を除く): 16253025

約数列:

[1, 3, 5, 15, 25, 37, 53, 75, 111, 149, 159, 185, 265, 447, 555, 745, 795, 925, 1325, 1961, 2235, 2775, 3725, 3975, 5513, 5883, 7897, 9805, 11175, 16539, 23691, 27565, 29415, 39485, 49025, 82695, 118455, 137825, 147075, 197425, 292189, 413475, 592275, 876567, 1460945, 4382835, 7304725, 21914175]

約数ペア:

[(1, 21914175), (3, 7304725), (5, 4382835), (15, 1460945), (25, 876567), (37, 592275), (53, 413475), (75, 292189), (111, 197425), (149, 147075), (159, 137825), (185, 118455), (265, 82695), (447, 49025), (555, 39485), (745, 29415), (795, 27565), (925, 23691), (1325, 16539), (1961, 11175), (2235, 9805), (2775, 7897), (3725, 5883), (3975, 5513)]