21997088

素因数分解:

$2^5\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{191}}^1$

素因数の和:321

約数の個数: 48

約数和(自身を含む): 44997120

約数和(自身を除く): 23000032

約数列:

[1, 2, 4, 8, 16, 32, 59, 61, 118, 122, 191, 236, 244, 382, 472, 488, 764, 944, 976, 1528, 1888, 1952, 3056, 3599, 6112, 7198, 11269, 11651, 14396, 22538, 23302, 28792, 45076, 46604, 57584, 90152, 93208, 115168, 180304, 186416, 360608, 372832, 687409, 1374818, 2749636, 5499272, 10998544, 21997088]

約数ペア:

[(1, 21997088), (2, 10998544), (4, 5499272), (8, 2749636), (16, 1374818), (32, 687409), (59, 372832), (61, 360608), (118, 186416), (122, 180304), (191, 115168), (236, 93208), (244, 90152), (382, 57584), (472, 46604), (488, 45076), (764, 28792), (944, 23302), (976, 22538), (1528, 14396), (1888, 11651), (1952, 11269), (3056, 7198), (3599, 6112)]