81151920

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{269}}^1\times {\mathrm{419}}^1$

素因数の和:707

約数の個数: 120

約数和(自身を含む): 274201200

約数和(自身を除く): 193049280

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, 419, 538, 720, 807, 838, 1076, 1257, 1345, 1614, 1676, 2095, 2152, 2421, 2514, 2690, 3228, 3352, 3771, 4035, 4190, 4304, 4842, 5028, 5380, 6285, 6456, 6704, 7542, 8070, 8380, 9684, 10056, 10760, 12105, 12570, 12912, 15084, 16140, 16760, 18855, 19368, 20112, 21520, 24210, 25140, 30168, 32280, 33520, 37710, 38736, 48420, 50280, 60336, 64560, 75420, 96840, 100560, 112711, 150840, 193680, 225422, 301680, 338133, 450844, 563555, 676266, 901688, 1014399, 1127110, 1352532, 1690665, 1803376, 2028798, 2254220, 2705064, 3381330, 4057596, 4508440, 5071995, 5410128, 6762660, 8115192, 9016880, 10143990, 13525320, 16230384, 20287980, 27050640, 40575960, 81151920]

約数ペア:

[(1, 81151920), (2, 40575960), (3, 27050640), (4, 20287980), (5, 16230384), (6, 13525320), (8, 10143990), (9, 9016880), (10, 8115192), (12, 6762660), (15, 5410128), (16, 5071995), (18, 4508440), (20, 4057596), (24, 3381330), (30, 2705064), (36, 2254220), (40, 2028798), (45, 1803376), (48, 1690665), (60, 1352532), (72, 1127110), (80, 1014399), (90, 901688), (120, 676266), (144, 563555), (180, 450844), (240, 338133), (269, 301680), (360, 225422), (419, 193680), (538, 150840), (720, 112711), (807, 100560), (838, 96840), (1076, 75420), (1257, 64560), (1345, 60336), (1614, 50280), (1676, 48420), (2095, 38736), (2152, 37710), (2421, 33520), (2514, 32280), (2690, 30168), (3228, 25140), (3352, 24210), (3771, 21520), (4035, 20112), (4190, 19368), (4304, 18855), (4842, 16760), (5028, 16140), (5380, 15084), (6285, 12912), (6456, 12570), (6704, 12105), (7542, 10760), (8070, 10056), (8380, 9684)]