20520120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{271}}^1\times {\mathrm{631}}^1$

素因数の和:916

約数の個数: 64

約数和(自身を含む): 61885440

約数和(自身を除く): 41365320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 271, 542, 631, 813, 1084, 1262, 1355, 1626, 1893, 2168, 2524, 2710, 3155, 3252, 3786, 4065, 5048, 5420, 6310, 6504, 7572, 8130, 9465, 10840, 12620, 15144, 16260, 18930, 25240, 32520, 37860, 75720, 171001, 342002, 513003, 684004, 855005, 1026006, 1368008, 1710010, 2052012, 2565015, 3420020, 4104024, 5130030, 6840040, 10260060, 20520120]

約数ペア:

[(1, 20520120), (2, 10260060), (3, 6840040), (4, 5130030), (5, 4104024), (6, 3420020), (8, 2565015), (10, 2052012), (12, 1710010), (15, 1368008), (20, 1026006), (24, 855005), (30, 684004), (40, 513003), (60, 342002), (120, 171001), (271, 75720), (542, 37860), (631, 32520), (813, 25240), (1084, 18930), (1262, 16260), (1355, 15144), (1626, 12620), (1893, 10840), (2168, 9465), (2524, 8130), (2710, 7572), (3155, 6504), (3252, 6310), (3786, 5420), (4065, 5048)]