68791821

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{251}}^1\times {\mathrm{421}}^1$

素因数の和:713

約数の個数: 32

約数和(自身を含む): 108896256

約数和(自身を除く): 40104435

約数列:

[1, 3, 7, 21, 31, 93, 217, 251, 421, 651, 753, 1263, 1757, 2947, 5271, 7781, 8841, 13051, 23343, 39153, 54467, 91357, 105671, 163401, 274071, 317013, 739697, 2219091, 3275801, 9827403, 22930607, 68791821]

約数ペア:

[(1, 68791821), (3, 22930607), (7, 9827403), (21, 3275801), (31, 2219091), (93, 739697), (217, 317013), (251, 274071), (421, 163401), (651, 105671), (753, 91357), (1263, 54467), (1757, 39153), (2947, 23343), (5271, 13051), (7781, 8841)]