18664048

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1471}}^1$

素因数の和:1553

約数の個数: 40

約数和(自身を含む): 39608576

約数和(自身を除く): 20944528

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 61, 104, 122, 208, 244, 488, 793, 976, 1471, 1586, 2942, 3172, 5884, 6344, 11768, 12688, 19123, 23536, 38246, 76492, 89731, 152984, 179462, 305968, 358924, 717848, 1166503, 1435696, 2333006, 4666012, 9332024, 18664048]

約数ペア:

[(1, 18664048), (2, 9332024), (4, 4666012), (8, 2333006), (13, 1435696), (16, 1166503), (26, 717848), (52, 358924), (61, 305968), (104, 179462), (122, 152984), (208, 89731), (244, 76492), (488, 38246), (793, 23536), (976, 19123), (1471, 12688), (1586, 11768), (2942, 6344), (3172, 5884)]