21180120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13577}}^1$

素因数の和:13604

約数の個数: 64

約数和(自身を含む): 68433120

約数和(自身を除く): 47253000

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 13577, 27154, 40731, 54308, 67885, 81462, 108616, 135770, 162924, 176501, 203655, 271540, 325848, 353002, 407310, 529503, 543080, 706004, 814620, 882505, 1059006, 1412008, 1629240, 1765010, 2118012, 2647515, 3530020, 4236024, 5295030, 7060040, 10590060, 21180120]

約数ペア:

[(1, 21180120), (2, 10590060), (3, 7060040), (4, 5295030), (5, 4236024), (6, 3530020), (8, 2647515), (10, 2118012), (12, 1765010), (13, 1629240), (15, 1412008), (20, 1059006), (24, 882505), (26, 814620), (30, 706004), (39, 543080), (40, 529503), (52, 407310), (60, 353002), (65, 325848), (78, 271540), (104, 203655), (120, 176501), (130, 162924), (156, 135770), (195, 108616), (260, 81462), (312, 67885), (390, 54308), (520, 40731), (780, 27154), (1560, 13577)]