18181020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{163}}^1$

素因数の和:212

約数の個数: 144

約数和(自身を含む): 60504192

約数和(自身を除く): 42323172

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, 163, 165, 169, 195, 220, 260, 286, 326, 330, 338, 390, 429, 489, 507, 572, 652, 660, 676, 715, 780, 815, 845, 858, 978, 1014, 1430, 1630, 1690, 1716, 1793, 1859, 1956, 2028, 2119, 2145, 2445, 2535, 2860, 3260, 3380, 3586, 3718, 4238, 4290, 4890, 5070, 5379, 5577, 6357, 7172, 7436, 8476, 8580, 8965, 9295, 9780, 10140, 10595, 10758, 11154, 12714, 17930, 18590, 21190, 21516, 22308, 23309, 25428, 26895, 27547, 27885, 31785, 35860, 37180, 42380, 46618, 53790, 55094, 55770, 63570, 69927, 82641, 93236, 107580, 110188, 111540, 116545, 127140, 137735, 139854, 165282, 233090, 275470, 279708, 303017, 330564, 349635, 413205, 466180, 550940, 606034, 699270, 826410, 909051, 1212068, 1398540, 1515085, 1652820, 1818102, 3030170, 3636204, 4545255, 6060340, 9090510, 18181020]

約数ペア:

[(1, 18181020), (2, 9090510), (3, 6060340), (4, 4545255), (5, 3636204), (6, 3030170), (10, 1818102), (11, 1652820), (12, 1515085), (13, 1398540), (15, 1212068), (20, 909051), (22, 826410), (26, 699270), (30, 606034), (33, 550940), (39, 466180), (44, 413205), (52, 349635), (55, 330564), (60, 303017), (65, 279708), (66, 275470), (78, 233090), (110, 165282), (130, 139854), (132, 137735), (143, 127140), (156, 116545), (163, 111540), (165, 110188), (169, 107580), (195, 93236), (220, 82641), (260, 69927), (286, 63570), (326, 55770), (330, 55094), (338, 53790), (390, 46618), (429, 42380), (489, 37180), (507, 35860), (572, 31785), (652, 27885), (660, 27547), (676, 26895), (715, 25428), (780, 23309), (815, 22308), (845, 21516), (858, 21190), (978, 18590), (1014, 17930), (1430, 12714), (1630, 11154), (1690, 10758), (1716, 10595), (1793, 10140), (1859, 9780), (1956, 9295), (2028, 8965), (2119, 8580), (2145, 8476), (2445, 7436), (2535, 7172), (2860, 6357), (3260, 5577), (3380, 5379), (3586, 5070), (3718, 4890), (4238, 4290)]