19809488

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{1087}}^1$

素因数の和:1179

約数の個数: 40

約数和(自身を含む): 41283072

約数和(自身を除く): 21473584

約数列:

[1, 2, 4, 8, 16, 17, 34, 67, 68, 134, 136, 268, 272, 536, 1072, 1087, 1139, 2174, 2278, 4348, 4556, 8696, 9112, 17392, 18224, 18479, 36958, 72829, 73916, 145658, 147832, 291316, 295664, 582632, 1165264, 1238093, 2476186, 4952372, 9904744, 19809488]

約数ペア:

[(1, 19809488), (2, 9904744), (4, 4952372), (8, 2476186), (16, 1238093), (17, 1165264), (34, 582632), (67, 295664), (68, 291316), (134, 147832), (136, 145658), (268, 73916), (272, 72829), (536, 36958), (1072, 18479), (1087, 18224), (1139, 17392), (2174, 9112), (2278, 8696), (4348, 4556)]