20939958

素因数分解:

$2^1\times 3^4\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{163}}^1$

素因数の和:251

約数の個数: 80

約数和(自身を含む): 51673776

約数和(自身を除く): 30733818

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 61, 78, 81, 117, 122, 162, 163, 183, 234, 326, 351, 366, 489, 549, 702, 793, 978, 1053, 1098, 1467, 1586, 1647, 2106, 2119, 2379, 2934, 3294, 4238, 4401, 4758, 4941, 6357, 7137, 8802, 9882, 9943, 12714, 13203, 14274, 19071, 19886, 21411, 26406, 29829, 38142, 42822, 57213, 59658, 64233, 89487, 114426, 128466, 129259, 171639, 178974, 258518, 268461, 343278, 387777, 536922, 775554, 805383, 1163331, 1610766, 2326662, 3489993, 6979986, 10469979, 20939958]

約数ペア:

[(1, 20939958), (2, 10469979), (3, 6979986), (6, 3489993), (9, 2326662), (13, 1610766), (18, 1163331), (26, 805383), (27, 775554), (39, 536922), (54, 387777), (61, 343278), (78, 268461), (81, 258518), (117, 178974), (122, 171639), (162, 129259), (163, 128466), (183, 114426), (234, 89487), (326, 64233), (351, 59658), (366, 57213), (489, 42822), (549, 38142), (702, 29829), (793, 26406), (978, 21411), (1053, 19886), (1098, 19071), (1467, 14274), (1586, 13203), (1647, 12714), (2106, 9943), (2119, 9882), (2379, 8802), (2934, 7137), (3294, 6357), (4238, 4941), (4401, 4758)]