21725460

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{881}}^1$

素因数の和:1033

約数の個数: 72

約数和(自身を含む): 66456936

約数和(自身を除く): 44731476

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 137, 180, 274, 411, 548, 685, 822, 881, 1233, 1370, 1644, 1762, 2055, 2466, 2643, 2740, 3524, 4110, 4405, 4932, 5286, 6165, 7929, 8220, 8810, 10572, 12330, 13215, 15858, 17620, 24660, 26430, 31716, 39645, 52860, 79290, 120697, 158580, 241394, 362091, 482788, 603485, 724182, 1086273, 1206970, 1448364, 1810455, 2172546, 2413940, 3620910, 4345092, 5431365, 7241820, 10862730, 21725460]

約数ペア:

[(1, 21725460), (2, 10862730), (3, 7241820), (4, 5431365), (5, 4345092), (6, 3620910), (9, 2413940), (10, 2172546), (12, 1810455), (15, 1448364), (18, 1206970), (20, 1086273), (30, 724182), (36, 603485), (45, 482788), (60, 362091), (90, 241394), (137, 158580), (180, 120697), (274, 79290), (411, 52860), (548, 39645), (685, 31716), (822, 26430), (881, 24660), (1233, 17620), (1370, 15858), (1644, 13215), (1762, 12330), (2055, 10572), (2466, 8810), (2643, 8220), (2740, 7929), (3524, 6165), (4110, 5286), (4405, 4932)]