81393660

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{1069}}^1$

素因数の和:1137

約数の個数: 120

約数和(自身を含む): 261011520

約数和(自身を除く): 179617860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 47, 54, 60, 81, 90, 94, 108, 135, 141, 162, 180, 188, 235, 270, 282, 324, 405, 423, 470, 540, 564, 705, 810, 846, 940, 1069, 1269, 1410, 1620, 1692, 2115, 2138, 2538, 2820, 3207, 3807, 4230, 4276, 5076, 5345, 6345, 6414, 7614, 8460, 9621, 10690, 12690, 12828, 15228, 16035, 19035, 19242, 21380, 25380, 28863, 32070, 38070, 38484, 48105, 50243, 57726, 64140, 76140, 86589, 96210, 100486, 115452, 144315, 150729, 173178, 192420, 200972, 251215, 288630, 301458, 346356, 432945, 452187, 502430, 577260, 602916, 753645, 865890, 904374, 1004860, 1356561, 1507290, 1731780, 1808748, 2260935, 2713122, 3014580, 4069683, 4521870, 5426244, 6782805, 8139366, 9043740, 13565610, 16278732, 20348415, 27131220, 40696830, 81393660]

約数ペア:

[(1, 81393660), (2, 40696830), (3, 27131220), (4, 20348415), (5, 16278732), (6, 13565610), (9, 9043740), (10, 8139366), (12, 6782805), (15, 5426244), (18, 4521870), (20, 4069683), (27, 3014580), (30, 2713122), (36, 2260935), (45, 1808748), (47, 1731780), (54, 1507290), (60, 1356561), (81, 1004860), (90, 904374), (94, 865890), (108, 753645), (135, 602916), (141, 577260), (162, 502430), (180, 452187), (188, 432945), (235, 346356), (270, 301458), (282, 288630), (324, 251215), (405, 200972), (423, 192420), (470, 173178), (540, 150729), (564, 144315), (705, 115452), (810, 100486), (846, 96210), (940, 86589), (1069, 76140), (1269, 64140), (1410, 57726), (1620, 50243), (1692, 48105), (2115, 38484), (2138, 38070), (2538, 32070), (2820, 28863), (3207, 25380), (3807, 21380), (4230, 19242), (4276, 19035), (5076, 16035), (5345, 15228), (6345, 12828), (6414, 12690), (7614, 10690), (8460, 9621)]