398545982

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{173}}^1\times {\mathrm{509}}^1$

素因数の和:788

約数の個数: 32

約数和(自身を含む): 630408960

約数和(自身を除く): 231862978

約数列:

[1, 2, 31, 62, 73, 146, 173, 346, 509, 1018, 2263, 4526, 5363, 10726, 12629, 15779, 25258, 31558, 37157, 74314, 88057, 176114, 391499, 782998, 1151867, 2303734, 2729767, 5459534, 6428161, 12856322, 199272991, 398545982]

約数ペア:

[(1, 398545982), (2, 199272991), (31, 12856322), (62, 6428161), (73, 5459534), (146, 2729767), (173, 2303734), (346, 1151867), (509, 782998), (1018, 391499), (2263, 176114), (4526, 88057), (5363, 74314), (10726, 37157), (12629, 31558), (15779, 25258)]