20007400

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{461}}^1$

素因数の和:515

約数の個数: 96

約数和(自身を含む): 54996480

約数和(自身を除く): 34989080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 31, 35, 40, 50, 56, 62, 70, 100, 124, 140, 155, 175, 200, 217, 248, 280, 310, 350, 434, 461, 620, 700, 775, 868, 922, 1085, 1240, 1400, 1550, 1736, 1844, 2170, 2305, 3100, 3227, 3688, 4340, 4610, 5425, 6200, 6454, 8680, 9220, 10850, 11525, 12908, 14291, 16135, 18440, 21700, 23050, 25816, 28582, 32270, 43400, 46100, 57164, 64540, 71455, 80675, 92200, 100037, 114328, 129080, 142910, 161350, 200074, 285820, 322700, 357275, 400148, 500185, 571640, 645400, 714550, 800296, 1000370, 1429100, 2000740, 2500925, 2858200, 4001480, 5001850, 10003700, 20007400]

約数ペア:

[(1, 20007400), (2, 10003700), (4, 5001850), (5, 4001480), (7, 2858200), (8, 2500925), (10, 2000740), (14, 1429100), (20, 1000370), (25, 800296), (28, 714550), (31, 645400), (35, 571640), (40, 500185), (50, 400148), (56, 357275), (62, 322700), (70, 285820), (100, 200074), (124, 161350), (140, 142910), (155, 129080), (175, 114328), (200, 100037), (217, 92200), (248, 80675), (280, 71455), (310, 64540), (350, 57164), (434, 46100), (461, 43400), (620, 32270), (700, 28582), (775, 25816), (868, 23050), (922, 21700), (1085, 18440), (1240, 16135), (1400, 14291), (1550, 12908), (1736, 11525), (1844, 10850), (2170, 9220), (2305, 8680), (3100, 6454), (3227, 6200), (3688, 5425), (4340, 4610)]