19965660

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{179}}^1$

素因数の和:228

約数の個数: 144

約数和(自身を含む): 66407040

約数和(自身を除く): 46441380

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 13, 15, 20, 22, 26, 30, 33, 39, 44, 52, 55, 60, 65, 66, 78, 110, 130, 132, 143, 156, 165, 169, 179, 195, 220, 260, 286, 330, 338, 358, 390, 429, 507, 537, 572, 660, 676, 715, 716, 780, 845, 858, 895, 1014, 1074, 1430, 1690, 1716, 1790, 1859, 1969, 2028, 2145, 2148, 2327, 2535, 2685, 2860, 3380, 3580, 3718, 3938, 4290, 4654, 5070, 5370, 5577, 5907, 6981, 7436, 7876, 8580, 9295, 9308, 9845, 10140, 10740, 11154, 11635, 11814, 13962, 18590, 19690, 22308, 23270, 23628, 25597, 27885, 27924, 29535, 30251, 34905, 37180, 39380, 46540, 51194, 55770, 59070, 60502, 69810, 76791, 90753, 102388, 111540, 118140, 121004, 127985, 139620, 151255, 153582, 181506, 255970, 302510, 307164, 332761, 363012, 383955, 453765, 511940, 605020, 665522, 767910, 907530, 998283, 1331044, 1535820, 1663805, 1815060, 1996566, 3327610, 3993132, 4991415, 6655220, 9982830, 19965660]

約数ペア:

[(1, 19965660), (2, 9982830), (3, 6655220), (4, 4991415), (5, 3993132), (6, 3327610), (10, 1996566), (11, 1815060), (12, 1663805), (13, 1535820), (15, 1331044), (20, 998283), (22, 907530), (26, 767910), (30, 665522), (33, 605020), (39, 511940), (44, 453765), (52, 383955), (55, 363012), (60, 332761), (65, 307164), (66, 302510), (78, 255970), (110, 181506), (130, 153582), (132, 151255), (143, 139620), (156, 127985), (165, 121004), (169, 118140), (179, 111540), (195, 102388), (220, 90753), (260, 76791), (286, 69810), (330, 60502), (338, 59070), (358, 55770), (390, 51194), (429, 46540), (507, 39380), (537, 37180), (572, 34905), (660, 30251), (676, 29535), (715, 27924), (716, 27885), (780, 25597), (845, 23628), (858, 23270), (895, 22308), (1014, 19690), (1074, 18590), (1430, 13962), (1690, 11814), (1716, 11635), (1790, 11154), (1859, 10740), (1969, 10140), (2028, 9845), (2145, 9308), (2148, 9295), (2327, 8580), (2535, 7876), (2685, 7436), (2860, 6981), (3380, 5907), (3580, 5577), (3718, 5370), (3938, 5070), (4290, 4654)]