19904790

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1259}}^1$

素因数の和:1317

約数の個数: 64

約数和(自身を含む): 52254720

約数和(自身を除く): 32349930

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 30, 31, 34, 51, 62, 85, 93, 102, 155, 170, 186, 255, 310, 465, 510, 527, 930, 1054, 1259, 1581, 2518, 2635, 3162, 3777, 5270, 6295, 7554, 7905, 12590, 15810, 18885, 21403, 37770, 39029, 42806, 64209, 78058, 107015, 117087, 128418, 195145, 214030, 234174, 321045, 390290, 585435, 642090, 663493, 1170870, 1326986, 1990479, 3317465, 3980958, 6634930, 9952395, 19904790]

約数ペア:

[(1, 19904790), (2, 9952395), (3, 6634930), (5, 3980958), (6, 3317465), (10, 1990479), (15, 1326986), (17, 1170870), (30, 663493), (31, 642090), (34, 585435), (51, 390290), (62, 321045), (85, 234174), (93, 214030), (102, 195145), (155, 128418), (170, 117087), (186, 107015), (255, 78058), (310, 64209), (465, 42806), (510, 39029), (527, 37770), (930, 21403), (1054, 18885), (1259, 15810), (1581, 12590), (2518, 7905), (2635, 7554), (3162, 6295), (3777, 5270)]