19878378

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{8221}}^1$

素因数の和:8270

約数の個数: 32

約数和(自身を含む): 44201472

約数和(自身を除く): 24323094

約数列:

[1, 2, 3, 6, 13, 26, 31, 39, 62, 78, 93, 186, 403, 806, 1209, 2418, 8221, 16442, 24663, 49326, 106873, 213746, 254851, 320619, 509702, 641238, 764553, 1529106, 3313063, 6626126, 9939189, 19878378]

約数ペア:

[(1, 19878378), (2, 9939189), (3, 6626126), (6, 3313063), (13, 1529106), (26, 764553), (31, 641238), (39, 509702), (62, 320619), (78, 254851), (93, 213746), (186, 106873), (403, 49326), (806, 24663), (1209, 16442), (2418, 8221)]