20858580

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{107}}^1$

素因数の和:163

約数の個数: 144

約数和(自身を含む): 69128640

約数和(自身を除く): 48270060

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 27, 30, 36, 38, 45, 54, 57, 60, 76, 90, 95, 107, 108, 114, 135, 171, 180, 190, 214, 228, 270, 285, 321, 342, 361, 380, 428, 513, 535, 540, 570, 642, 684, 722, 855, 963, 1026, 1070, 1083, 1140, 1284, 1444, 1605, 1710, 1805, 1926, 2033, 2052, 2140, 2166, 2565, 2889, 3210, 3249, 3420, 3610, 3852, 4066, 4332, 4815, 5130, 5415, 5778, 6099, 6420, 6498, 7220, 8132, 9630, 9747, 10165, 10260, 10830, 11556, 12198, 12996, 14445, 16245, 18297, 19260, 19494, 20330, 21660, 24396, 28890, 30495, 32490, 36594, 38627, 38988, 40660, 48735, 54891, 57780, 60990, 64980, 73188, 77254, 91485, 97470, 109782, 115881, 121980, 154508, 182970, 193135, 194940, 219564, 231762, 274455, 347643, 365940, 386270, 463524, 548910, 579405, 695286, 772540, 1042929, 1097820, 1158810, 1390572, 1738215, 2085858, 2317620, 3476430, 4171716, 5214645, 6952860, 10429290, 20858580]

約数ペア:

[(1, 20858580), (2, 10429290), (3, 6952860), (4, 5214645), (5, 4171716), (6, 3476430), (9, 2317620), (10, 2085858), (12, 1738215), (15, 1390572), (18, 1158810), (19, 1097820), (20, 1042929), (27, 772540), (30, 695286), (36, 579405), (38, 548910), (45, 463524), (54, 386270), (57, 365940), (60, 347643), (76, 274455), (90, 231762), (95, 219564), (107, 194940), (108, 193135), (114, 182970), (135, 154508), (171, 121980), (180, 115881), (190, 109782), (214, 97470), (228, 91485), (270, 77254), (285, 73188), (321, 64980), (342, 60990), (361, 57780), (380, 54891), (428, 48735), (513, 40660), (535, 38988), (540, 38627), (570, 36594), (642, 32490), (684, 30495), (722, 28890), (855, 24396), (963, 21660), (1026, 20330), (1070, 19494), (1083, 19260), (1140, 18297), (1284, 16245), (1444, 14445), (1605, 12996), (1710, 12198), (1805, 11556), (1926, 10830), (2033, 10260), (2052, 10165), (2140, 9747), (2166, 9630), (2565, 8132), (2889, 7220), (3210, 6498), (3249, 6420), (3420, 6099), (3610, 5778), (3852, 5415), (4066, 5130), (4332, 4815)]