20410370

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:203

約数の個数: 64

約数和(自身を含む): 41990400

約数和(自身を除く): 21580030

約数列:

[1, 2, 5, 10, 17, 19, 34, 38, 71, 85, 89, 95, 142, 170, 178, 190, 323, 355, 445, 646, 710, 890, 1207, 1349, 1513, 1615, 1691, 2414, 2698, 3026, 3230, 3382, 6035, 6319, 6745, 7565, 8455, 12070, 12638, 13490, 15130, 16910, 22933, 28747, 31595, 45866, 57494, 63190, 107423, 114665, 120061, 143735, 214846, 229330, 240122, 287470, 537115, 600305, 1074230, 1200610, 2041037, 4082074, 10205185, 20410370]

約数ペア:

[(1, 20410370), (2, 10205185), (5, 4082074), (10, 2041037), (17, 1200610), (19, 1074230), (34, 600305), (38, 537115), (71, 287470), (85, 240122), (89, 229330), (95, 214846), (142, 143735), (170, 120061), (178, 114665), (190, 107423), (323, 63190), (355, 57494), (445, 45866), (646, 31595), (710, 28747), (890, 22933), (1207, 16910), (1349, 15130), (1513, 13490), (1615, 12638), (1691, 12070), (2414, 8455), (2698, 7565), (3026, 6745), (3230, 6319), (3382, 6035)]