18958356

素因数分解:

$2^2\times 3^2\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{331}}^1$

素因数の和:421

約数の個数: 72

約数和(自身を含む): 50514464

約数和(自身を除く): 31556108

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 37, 43, 74, 86, 111, 129, 148, 172, 222, 258, 331, 333, 387, 444, 516, 662, 666, 774, 993, 1324, 1332, 1548, 1591, 1986, 2979, 3182, 3972, 4773, 5958, 6364, 9546, 11916, 12247, 14233, 14319, 19092, 24494, 28466, 28638, 36741, 42699, 48988, 56932, 57276, 73482, 85398, 110223, 128097, 146964, 170796, 220446, 256194, 440892, 512388, 526621, 1053242, 1579863, 2106484, 3159726, 4739589, 6319452, 9479178, 18958356]

約数ペア:

[(1, 18958356), (2, 9479178), (3, 6319452), (4, 4739589), (6, 3159726), (9, 2106484), (12, 1579863), (18, 1053242), (36, 526621), (37, 512388), (43, 440892), (74, 256194), (86, 220446), (111, 170796), (129, 146964), (148, 128097), (172, 110223), (222, 85398), (258, 73482), (331, 57276), (333, 56932), (387, 48988), (444, 42699), (516, 36741), (662, 28638), (666, 28466), (774, 24494), (993, 19092), (1324, 14319), (1332, 14233), (1548, 12247), (1591, 11916), (1986, 9546), (2979, 6364), (3182, 5958), (3972, 4773)]