16780400

素因数分解:

$2^4\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{461}}^1$

素因数の和:499

約数の個数: 120

約数和(自身を含む): 49725984

約数和(自身を除く): 32945584

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 25, 26, 28, 35, 40, 50, 52, 56, 65, 70, 80, 91, 100, 104, 112, 130, 140, 175, 182, 200, 208, 260, 280, 325, 350, 364, 400, 455, 461, 520, 560, 650, 700, 728, 910, 922, 1040, 1300, 1400, 1456, 1820, 1844, 2275, 2305, 2600, 2800, 3227, 3640, 3688, 4550, 4610, 5200, 5993, 6454, 7280, 7376, 9100, 9220, 11525, 11986, 12908, 16135, 18200, 18440, 23050, 23972, 25816, 29965, 32270, 36400, 36880, 41951, 46100, 47944, 51632, 59930, 64540, 80675, 83902, 92200, 95888, 119860, 129080, 149825, 161350, 167804, 184400, 209755, 239720, 258160, 299650, 322700, 335608, 419510, 479440, 599300, 645400, 671216, 839020, 1048775, 1198600, 1290800, 1678040, 2097550, 2397200, 3356080, 4195100, 8390200, 16780400]

約数ペア:

[(1, 16780400), (2, 8390200), (4, 4195100), (5, 3356080), (7, 2397200), (8, 2097550), (10, 1678040), (13, 1290800), (14, 1198600), (16, 1048775), (20, 839020), (25, 671216), (26, 645400), (28, 599300), (35, 479440), (40, 419510), (50, 335608), (52, 322700), (56, 299650), (65, 258160), (70, 239720), (80, 209755), (91, 184400), (100, 167804), (104, 161350), (112, 149825), (130, 129080), (140, 119860), (175, 95888), (182, 92200), (200, 83902), (208, 80675), (260, 64540), (280, 59930), (325, 51632), (350, 47944), (364, 46100), (400, 41951), (455, 36880), (461, 36400), (520, 32270), (560, 29965), (650, 25816), (700, 23972), (728, 23050), (910, 18440), (922, 18200), (1040, 16135), (1300, 12908), (1400, 11986), (1456, 11525), (1820, 9220), (1844, 9100), (2275, 7376), (2305, 7280), (2600, 6454), (2800, 5993), (3227, 5200), (3640, 4610), (3688, 4550)]