81539280

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{269}}^1\times {\mathrm{421}}^1$

素因数の和:709

約数の個数: 120

約数和(自身を含む): 275506920

約数和(自身を除く): 193967640

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 269, 360, 421, 538, 720, 807, 842, 1076, 1263, 1345, 1614, 1684, 2105, 2152, 2421, 2526, 2690, 3228, 3368, 3789, 4035, 4210, 4304, 4842, 5052, 5380, 6315, 6456, 6736, 7578, 8070, 8420, 9684, 10104, 10760, 12105, 12630, 12912, 15156, 16140, 16840, 18945, 19368, 20208, 21520, 24210, 25260, 30312, 32280, 33680, 37890, 38736, 48420, 50520, 60624, 64560, 75780, 96840, 101040, 113249, 151560, 193680, 226498, 303120, 339747, 452996, 566245, 679494, 905992, 1019241, 1132490, 1358988, 1698735, 1811984, 2038482, 2264980, 2717976, 3397470, 4076964, 4529960, 5096205, 5435952, 6794940, 8153928, 9059920, 10192410, 13589880, 16307856, 20384820, 27179760, 40769640, 81539280]

約数ペア:

[(1, 81539280), (2, 40769640), (3, 27179760), (4, 20384820), (5, 16307856), (6, 13589880), (8, 10192410), (9, 9059920), (10, 8153928), (12, 6794940), (15, 5435952), (16, 5096205), (18, 4529960), (20, 4076964), (24, 3397470), (30, 2717976), (36, 2264980), (40, 2038482), (45, 1811984), (48, 1698735), (60, 1358988), (72, 1132490), (80, 1019241), (90, 905992), (120, 679494), (144, 566245), (180, 452996), (240, 339747), (269, 303120), (360, 226498), (421, 193680), (538, 151560), (720, 113249), (807, 101040), (842, 96840), (1076, 75780), (1263, 64560), (1345, 60624), (1614, 50520), (1684, 48420), (2105, 38736), (2152, 37890), (2421, 33680), (2526, 32280), (2690, 30312), (3228, 25260), (3368, 24210), (3789, 21520), (4035, 20208), (4210, 19368), (4304, 18945), (4842, 16840), (5052, 16140), (5380, 15156), (6315, 12912), (6456, 12630), (6736, 12105), (7578, 10760), (8070, 10104), (8420, 9684)]