20818148

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{1109}}^1$

素因数の和:1164

約数の個数: 36

約数和(自身を含む): 41445180

約数和(自身を除く): 20627032

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 76, 247, 361, 494, 722, 988, 1109, 1444, 2218, 4436, 4693, 9386, 14417, 18772, 21071, 28834, 42142, 57668, 84284, 273923, 400349, 547846, 800698, 1095692, 1601396, 5204537, 10409074, 20818148]

約数ペア:

[(1, 20818148), (2, 10409074), (4, 5204537), (13, 1601396), (19, 1095692), (26, 800698), (38, 547846), (52, 400349), (76, 273923), (247, 84284), (361, 57668), (494, 42142), (722, 28834), (988, 21071), (1109, 18772), (1444, 14417), (2218, 9386), (4436, 4693)]