19915268

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{107}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 38707200

約数和(自身を除く): 18791932

約数列:

[1, 2, 4, 19, 31, 38, 62, 76, 79, 107, 124, 158, 214, 316, 428, 589, 1178, 1501, 2033, 2356, 2449, 3002, 3317, 4066, 4898, 6004, 6634, 8132, 8453, 9796, 13268, 16906, 33812, 46531, 63023, 93062, 126046, 160607, 186124, 252092, 262043, 321214, 524086, 642428, 1048172, 4978817, 9957634, 19915268]

約数ペア:

[(1, 19915268), (2, 9957634), (4, 4978817), (19, 1048172), (31, 642428), (38, 524086), (62, 321214), (76, 262043), (79, 252092), (107, 186124), (124, 160607), (158, 126046), (214, 93062), (316, 63023), (428, 46531), (589, 33812), (1178, 16906), (1501, 13268), (2033, 9796), (2356, 8453), (2449, 8132), (3002, 6634), (3317, 6004), (4066, 4898)]