31393390

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1$

素因数の和:122

約数の個数: 128

約数和(自身を含む): 75644928

約数和(自身を除く): 44251538

約数列:

[1, 2, 5, 7, 10, 14, 17, 23, 31, 34, 35, 37, 46, 62, 70, 74, 85, 115, 119, 155, 161, 170, 185, 217, 230, 238, 259, 310, 322, 370, 391, 434, 518, 527, 595, 629, 713, 782, 805, 851, 1054, 1085, 1147, 1190, 1258, 1295, 1426, 1610, 1702, 1955, 2170, 2294, 2590, 2635, 2737, 3145, 3565, 3689, 3910, 4255, 4403, 4991, 5270, 5474, 5735, 5957, 6290, 7130, 7378, 8029, 8510, 8806, 9982, 11470, 11914, 12121, 13685, 14467, 16058, 18445, 19499, 22015, 24242, 24955, 26381, 27370, 28934, 29785, 36890, 38998, 40145, 44030, 49910, 52762, 59570, 60605, 72335, 80290, 84847, 97495, 101269, 121210, 131905, 136493, 144670, 169694, 184667, 194990, 202538, 263810, 272986, 369334, 424235, 448477, 506345, 682465, 848470, 896954, 923335, 1012690, 1364930, 1846670, 2242385, 3139339, 4484770, 6278678, 15696695, 31393390]

約数ペア:

[(1, 31393390), (2, 15696695), (5, 6278678), (7, 4484770), (10, 3139339), (14, 2242385), (17, 1846670), (23, 1364930), (31, 1012690), (34, 923335), (35, 896954), (37, 848470), (46, 682465), (62, 506345), (70, 448477), (74, 424235), (85, 369334), (115, 272986), (119, 263810), (155, 202538), (161, 194990), (170, 184667), (185, 169694), (217, 144670), (230, 136493), (238, 131905), (259, 121210), (310, 101269), (322, 97495), (370, 84847), (391, 80290), (434, 72335), (518, 60605), (527, 59570), (595, 52762), (629, 49910), (713, 44030), (782, 40145), (805, 38998), (851, 36890), (1054, 29785), (1085, 28934), (1147, 27370), (1190, 26381), (1258, 24955), (1295, 24242), (1426, 22015), (1610, 19499), (1702, 18445), (1955, 16058), (2170, 14467), (2294, 13685), (2590, 12121), (2635, 11914), (2737, 11470), (3145, 9982), (3565, 8806), (3689, 8510), (3910, 8029), (4255, 7378), (4403, 7130), (4991, 6290), (5270, 5957), (5474, 5735)]