21053774

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{349}}^1$

素因数の和:528

約数の個数: 32

約数和(自身を含む): 37632000

約数和(自身を除く): 16578226

約数列:

[1, 2, 7, 14, 31, 62, 139, 217, 278, 349, 434, 698, 973, 1946, 2443, 4309, 4886, 8618, 10819, 21638, 30163, 48511, 60326, 75733, 97022, 151466, 339577, 679154, 1503841, 3007682, 10526887, 21053774]

約数ペア:

[(1, 21053774), (2, 10526887), (7, 3007682), (14, 1503841), (31, 679154), (62, 339577), (139, 151466), (217, 97022), (278, 75733), (349, 60326), (434, 48511), (698, 30163), (973, 21638), (1946, 10819), (2443, 8618), (4309, 4886)]