26157820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:215

約数の個数: 72

約数和(自身を含む): 60873120

約数和(自身を除く): 34715300

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 71, 109, 130, 142, 169, 218, 260, 284, 338, 355, 436, 545, 676, 710, 845, 923, 1090, 1417, 1420, 1690, 1846, 2180, 2834, 3380, 3692, 4615, 5668, 7085, 7739, 9230, 11999, 14170, 15478, 18421, 18460, 23998, 28340, 30956, 36842, 38695, 47996, 59995, 73684, 77390, 92105, 100607, 119990, 154780, 184210, 201214, 239980, 368420, 402428, 503035, 1006070, 1307891, 2012140, 2615782, 5231564, 6539455, 13078910, 26157820]

約数ペア:

[(1, 26157820), (2, 13078910), (4, 6539455), (5, 5231564), (10, 2615782), (13, 2012140), (20, 1307891), (26, 1006070), (52, 503035), (65, 402428), (71, 368420), (109, 239980), (130, 201214), (142, 184210), (169, 154780), (218, 119990), (260, 100607), (284, 92105), (338, 77390), (355, 73684), (436, 59995), (545, 47996), (676, 38695), (710, 36842), (845, 30956), (923, 28340), (1090, 23998), (1417, 18460), (1420, 18421), (1690, 15478), (1846, 14170), (2180, 11999), (2834, 9230), (3380, 7739), (3692, 7085), (4615, 5668)]