17820908

素因数分解:

$2^2\times 7^3\times {\mathrm{31}}^1\times {\mathrm{419}}^1$

素因数の和:475

約数の個数: 48

約数和(自身を含む): 37632000

約数和(自身を除く): 19811092

約数列:

[1, 2, 4, 7, 14, 28, 31, 49, 62, 98, 124, 196, 217, 343, 419, 434, 686, 838, 868, 1372, 1519, 1676, 2933, 3038, 5866, 6076, 10633, 11732, 12989, 20531, 21266, 25978, 41062, 42532, 51956, 82124, 90923, 143717, 181846, 287434, 363692, 574868, 636461, 1272922, 2545844, 4455227, 8910454, 17820908]

約数ペア:

[(1, 17820908), (2, 8910454), (4, 4455227), (7, 2545844), (14, 1272922), (28, 636461), (31, 574868), (49, 363692), (62, 287434), (98, 181846), (124, 143717), (196, 90923), (217, 82124), (343, 51956), (419, 42532), (434, 41062), (686, 25978), (838, 21266), (868, 20531), (1372, 12989), (1519, 11732), (1676, 10633), (2933, 6076), (3038, 5866)]