20342768

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{1097}}^1$

素因数の和:1185

約数の個数: 40

約数和(自身を含む): 42207120

約数和(自身を除く): 21864352

約数列:

[1, 2, 4, 8, 16, 19, 38, 61, 76, 122, 152, 244, 304, 488, 976, 1097, 1159, 2194, 2318, 4388, 4636, 8776, 9272, 17552, 18544, 20843, 41686, 66917, 83372, 133834, 166744, 267668, 333488, 535336, 1070672, 1271423, 2542846, 5085692, 10171384, 20342768]

約数ペア:

[(1, 20342768), (2, 10171384), (4, 5085692), (8, 2542846), (16, 1271423), (19, 1070672), (38, 535336), (61, 333488), (76, 267668), (122, 166744), (152, 133834), (244, 83372), (304, 66917), (488, 41686), (976, 20843), (1097, 18544), (1159, 17552), (2194, 9272), (2318, 8776), (4388, 4636)]