21073408

素因数分解:

$2^9\times {\mathrm{79}}^1\times {\mathrm{521}}^1$

素因数の和:618

約数の個数: 40

約数和(自身を含む): 42720480

約数和(自身を除く): 21647072

約数列:

[1, 2, 4, 8, 16, 32, 64, 79, 128, 158, 256, 316, 512, 521, 632, 1042, 1264, 2084, 2528, 4168, 5056, 8336, 10112, 16672, 20224, 33344, 40448, 41159, 66688, 82318, 133376, 164636, 266752, 329272, 658544, 1317088, 2634176, 5268352, 10536704, 21073408]

約数ペア:

[(1, 21073408), (2, 10536704), (4, 5268352), (8, 2634176), (16, 1317088), (32, 658544), (64, 329272), (79, 266752), (128, 164636), (158, 133376), (256, 82318), (316, 66688), (512, 41159), (521, 40448), (632, 33344), (1042, 20224), (1264, 16672), (2084, 10112), (2528, 8336), (4168, 5056)]