20526810

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{419}}^1$

素因数の和:523

約数の個数: 64

約数和(自身を含む): 52254720

約数和(自身を除く): 31727910

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 71, 115, 138, 142, 213, 230, 345, 355, 419, 426, 690, 710, 838, 1065, 1257, 1633, 2095, 2130, 2514, 3266, 4190, 4899, 6285, 8165, 9637, 9798, 12570, 16330, 19274, 24495, 28911, 29749, 48185, 48990, 57822, 59498, 89247, 96370, 144555, 148745, 178494, 289110, 297490, 446235, 684227, 892470, 1368454, 2052681, 3421135, 4105362, 6842270, 10263405, 20526810]

約数ペア:

[(1, 20526810), (2, 10263405), (3, 6842270), (5, 4105362), (6, 3421135), (10, 2052681), (15, 1368454), (23, 892470), (30, 684227), (46, 446235), (69, 297490), (71, 289110), (115, 178494), (138, 148745), (142, 144555), (213, 96370), (230, 89247), (345, 59498), (355, 57822), (419, 48990), (426, 48185), (690, 29749), (710, 28911), (838, 24495), (1065, 19274), (1257, 16330), (1633, 12570), (2095, 9798), (2130, 9637), (2514, 8165), (3266, 6285), (4190, 4899)]