21162180

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{2087}}^1$

素因数の和:2125

約数の個数: 72

約数和(自身を含む): 64193472

約数和(自身を除く): 43031292

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 169, 195, 260, 338, 390, 507, 676, 780, 845, 1014, 1690, 2028, 2087, 2535, 3380, 4174, 5070, 6261, 8348, 10140, 10435, 12522, 20870, 25044, 27131, 31305, 41740, 54262, 62610, 81393, 108524, 125220, 135655, 162786, 271310, 325572, 352703, 406965, 542620, 705406, 813930, 1058109, 1410812, 1627860, 1763515, 2116218, 3527030, 4232436, 5290545, 7054060, 10581090, 21162180]

約数ペア:

[(1, 21162180), (2, 10581090), (3, 7054060), (4, 5290545), (5, 4232436), (6, 3527030), (10, 2116218), (12, 1763515), (13, 1627860), (15, 1410812), (20, 1058109), (26, 813930), (30, 705406), (39, 542620), (52, 406965), (60, 352703), (65, 325572), (78, 271310), (130, 162786), (156, 135655), (169, 125220), (195, 108524), (260, 81393), (338, 62610), (390, 54262), (507, 41740), (676, 31305), (780, 27131), (845, 25044), (1014, 20870), (1690, 12522), (2028, 10435), (2087, 10140), (2535, 8348), (3380, 6261), (4174, 5070)]