161945875

素因数分解:

$5^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{619}}^1$

素因数の和:677

約数の個数: 64

約数和(自身を含む): 259983360

約数和(自身を除く): 98037485

約数列:

[1, 5, 7, 13, 23, 25, 35, 65, 91, 115, 125, 161, 175, 299, 325, 455, 575, 619, 805, 875, 1495, 1625, 2093, 2275, 2875, 3095, 4025, 4333, 7475, 8047, 10465, 11375, 14237, 15475, 20125, 21665, 37375, 40235, 52325, 56329, 71185, 77375, 99659, 108325, 185081, 201175, 261625, 281645, 355925, 498295, 541625, 925405, 1005875, 1295567, 1408225, 1779625, 2491475, 4627025, 6477835, 7041125, 12457375, 23135125, 32389175, 161945875]

約数ペア:

[(1, 161945875), (5, 32389175), (7, 23135125), (13, 12457375), (23, 7041125), (25, 6477835), (35, 4627025), (65, 2491475), (91, 1779625), (115, 1408225), (125, 1295567), (161, 1005875), (175, 925405), (299, 541625), (325, 498295), (455, 355925), (575, 281645), (619, 261625), (805, 201175), (875, 185081), (1495, 108325), (1625, 99659), (2093, 77375), (2275, 71185), (2875, 56329), (3095, 52325), (4025, 40235), (4333, 37375), (7475, 21665), (8047, 20125), (10465, 15475), (11375, 14237)]