20342540

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1$

素因数の和:159

約数の個数: 96

約数和(自身を含む): 49351680

約数和(自身を除く): 29009140

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 47, 67, 68, 76, 85, 94, 95, 134, 170, 188, 190, 235, 268, 323, 335, 340, 380, 470, 646, 670, 799, 893, 940, 1139, 1273, 1292, 1340, 1598, 1615, 1786, 2278, 2546, 3149, 3196, 3230, 3572, 3995, 4465, 4556, 5092, 5695, 6298, 6365, 6460, 7990, 8930, 11390, 12596, 12730, 15181, 15745, 15980, 17860, 21641, 22780, 25460, 30362, 31490, 43282, 53533, 59831, 60724, 62980, 75905, 86564, 107066, 108205, 119662, 151810, 214132, 216410, 239324, 267665, 299155, 303620, 432820, 535330, 598310, 1017127, 1070660, 1196620, 2034254, 4068508, 5085635, 10171270, 20342540]

約数ペア:

[(1, 20342540), (2, 10171270), (4, 5085635), (5, 4068508), (10, 2034254), (17, 1196620), (19, 1070660), (20, 1017127), (34, 598310), (38, 535330), (47, 432820), (67, 303620), (68, 299155), (76, 267665), (85, 239324), (94, 216410), (95, 214132), (134, 151810), (170, 119662), (188, 108205), (190, 107066), (235, 86564), (268, 75905), (323, 62980), (335, 60724), (340, 59831), (380, 53533), (470, 43282), (646, 31490), (670, 30362), (799, 25460), (893, 22780), (940, 21641), (1139, 17860), (1273, 15980), (1292, 15745), (1340, 15181), (1598, 12730), (1615, 12596), (1786, 11390), (2278, 8930), (2546, 7990), (3149, 6460), (3196, 6365), (3230, 6298), (3572, 5695), (3995, 5092), (4465, 4556)]