400723440

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{128437}}^1$

素因数の和:128466

約数の個数: 80

約数和(自身を含む): 1337810208

約数和(自身を除く): 937086768

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 780, 1040, 1560, 3120, 128437, 256874, 385311, 513748, 642185, 770622, 1027496, 1284370, 1541244, 1669681, 1926555, 2054992, 2568740, 3082488, 3339362, 3853110, 5009043, 5137480, 6164976, 6678724, 7706220, 8348405, 10018086, 10274960, 13357448, 15412440, 16696810, 20036172, 25045215, 26714896, 30824880, 33393620, 40072344, 50090430, 66787240, 80144688, 100180860, 133574480, 200361720, 400723440]

約数ペア:

[(1, 400723440), (2, 200361720), (3, 133574480), (4, 100180860), (5, 80144688), (6, 66787240), (8, 50090430), (10, 40072344), (12, 33393620), (13, 30824880), (15, 26714896), (16, 25045215), (20, 20036172), (24, 16696810), (26, 15412440), (30, 13357448), (39, 10274960), (40, 10018086), (48, 8348405), (52, 7706220), (60, 6678724), (65, 6164976), (78, 5137480), (80, 5009043), (104, 3853110), (120, 3339362), (130, 3082488), (156, 2568740), (195, 2054992), (208, 1926555), (240, 1669681), (260, 1541244), (312, 1284370), (390, 1027496), (520, 770622), (624, 642185), (780, 513748), (1040, 385311), (1560, 256874), (3120, 128437)]