21395340

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{281}}^1$

素因数の和:349

約数の個数: 120

約数和(自身を含む): 68789952

約数和(自身を除く): 47394612

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, 281, 282, 324, 405, 423, 470, 540, 562, 564, 705, 810, 843, 846, 940, 1124, 1269, 1405, 1410, 1620, 1686, 1692, 2115, 2529, 2538, 2810, 2820, 3372, 3807, 4215, 4230, 5058, 5076, 5620, 6345, 7587, 7614, 8430, 8460, 10116, 12645, 12690, 13207, 15174, 15228, 16860, 19035, 22761, 25290, 25380, 26414, 30348, 37935, 38070, 39621, 45522, 50580, 52828, 66035, 75870, 76140, 79242, 91044, 113805, 118863, 132070, 151740, 158484, 198105, 227610, 237726, 264140, 356589, 396210, 455220, 475452, 594315, 713178, 792420, 1069767, 1188630, 1426356, 1782945, 2139534, 2377260, 3565890, 4279068, 5348835, 7131780, 10697670, 21395340]

約数ペア:

[(1, 21395340), (2, 10697670), (3, 7131780), (4, 5348835), (5, 4279068), (6, 3565890), (9, 2377260), (10, 2139534), (12, 1782945), (15, 1426356), (18, 1188630), (20, 1069767), (27, 792420), (30, 713178), (36, 594315), (45, 475452), (47, 455220), (54, 396210), (60, 356589), (81, 264140), (90, 237726), (94, 227610), (108, 198105), (135, 158484), (141, 151740), (162, 132070), (180, 118863), (188, 113805), (235, 91044), (270, 79242), (281, 76140), (282, 75870), (324, 66035), (405, 52828), (423, 50580), (470, 45522), (540, 39621), (562, 38070), (564, 37935), (705, 30348), (810, 26414), (843, 25380), (846, 25290), (940, 22761), (1124, 19035), (1269, 16860), (1405, 15228), (1410, 15174), (1620, 13207), (1686, 12690), (1692, 12645), (2115, 10116), (2529, 8460), (2538, 8430), (2810, 7614), (2820, 7587), (3372, 6345), (3807, 5620), (4215, 5076), (4230, 5058)]