19577584

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1543}}^1$

素因数の和:1625

約数の個数: 40

約数和(自身を含む): 41545952

約数和(自身を除く): 21968368

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 61, 104, 122, 208, 244, 488, 793, 976, 1543, 1586, 3086, 3172, 6172, 6344, 12344, 12688, 20059, 24688, 40118, 80236, 94123, 160472, 188246, 320944, 376492, 752984, 1223599, 1505968, 2447198, 4894396, 9788792, 19577584]

約数ペア:

[(1, 19577584), (2, 9788792), (4, 4894396), (8, 2447198), (13, 1505968), (16, 1223599), (26, 752984), (52, 376492), (61, 320944), (104, 188246), (122, 160472), (208, 94123), (244, 80236), (488, 40118), (793, 24688), (976, 20059), (1543, 12688), (1586, 12344), (3086, 6344), (3172, 6172)]