16640820

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{281}}^1$

素因数の和:350

約数の個数: 144

約数和(自身を含む): 59125248

約数和(自身を除く): 42484428

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 47, 60, 63, 70, 84, 90, 94, 105, 126, 140, 141, 180, 188, 210, 235, 252, 281, 282, 315, 329, 420, 423, 470, 562, 564, 630, 658, 705, 843, 846, 940, 987, 1124, 1260, 1316, 1405, 1410, 1645, 1686, 1692, 1967, 1974, 2115, 2529, 2810, 2820, 2961, 3290, 3372, 3934, 3948, 4215, 4230, 4935, 5058, 5620, 5901, 5922, 6580, 7868, 8430, 8460, 9835, 9870, 10116, 11802, 11844, 12645, 13207, 14805, 16860, 17703, 19670, 19740, 23604, 25290, 26414, 29505, 29610, 35406, 39340, 39621, 50580, 52828, 59010, 59220, 66035, 70812, 79242, 88515, 92449, 118020, 118863, 132070, 158484, 177030, 184898, 198105, 237726, 264140, 277347, 354060, 369796, 396210, 462245, 475452, 554694, 594315, 792420, 832041, 924490, 1109388, 1188630, 1386735, 1664082, 1848980, 2377260, 2773470, 3328164, 4160205, 5546940, 8320410, 16640820]

約数ペア:

[(1, 16640820), (2, 8320410), (3, 5546940), (4, 4160205), (5, 3328164), (6, 2773470), (7, 2377260), (9, 1848980), (10, 1664082), (12, 1386735), (14, 1188630), (15, 1109388), (18, 924490), (20, 832041), (21, 792420), (28, 594315), (30, 554694), (35, 475452), (36, 462245), (42, 396210), (45, 369796), (47, 354060), (60, 277347), (63, 264140), (70, 237726), (84, 198105), (90, 184898), (94, 177030), (105, 158484), (126, 132070), (140, 118863), (141, 118020), (180, 92449), (188, 88515), (210, 79242), (235, 70812), (252, 66035), (281, 59220), (282, 59010), (315, 52828), (329, 50580), (420, 39621), (423, 39340), (470, 35406), (562, 29610), (564, 29505), (630, 26414), (658, 25290), (705, 23604), (843, 19740), (846, 19670), (940, 17703), (987, 16860), (1124, 14805), (1260, 13207), (1316, 12645), (1405, 11844), (1410, 11802), (1645, 10116), (1686, 9870), (1692, 9835), (1967, 8460), (1974, 8430), (2115, 7868), (2529, 6580), (2810, 5922), (2820, 5901), (2961, 5620), (3290, 5058), (3372, 4935), (3934, 4230), (3948, 4215)]