20571630

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{431}}^1$

素因数の和:521

約数の個数: 64

約数和(自身を含む): 52005888

約数和(自身を除く): 31434258

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 37, 43, 74, 86, 111, 129, 185, 215, 222, 258, 370, 430, 431, 555, 645, 862, 1110, 1290, 1293, 1591, 2155, 2586, 3182, 4310, 4773, 6465, 7955, 9546, 12930, 15910, 15947, 18533, 23865, 31894, 37066, 47730, 47841, 55599, 79735, 92665, 95682, 111198, 159470, 185330, 239205, 277995, 478410, 555990, 685721, 1371442, 2057163, 3428605, 4114326, 6857210, 10285815, 20571630]

約数ペア:

[(1, 20571630), (2, 10285815), (3, 6857210), (5, 4114326), (6, 3428605), (10, 2057163), (15, 1371442), (30, 685721), (37, 555990), (43, 478410), (74, 277995), (86, 239205), (111, 185330), (129, 159470), (185, 111198), (215, 95682), (222, 92665), (258, 79735), (370, 55599), (430, 47841), (431, 47730), (555, 37066), (645, 31894), (862, 23865), (1110, 18533), (1290, 15947), (1293, 15910), (1591, 12930), (2155, 9546), (2586, 7955), (3182, 6465), (4310, 4773)]