20486484

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{491}}^1$

素因数の和:581

約数の個数: 72

約数和(自身を含む): 55517280

約数和(自身を除く): 35030796

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 61, 76, 114, 122, 171, 183, 228, 244, 342, 366, 491, 549, 684, 732, 982, 1098, 1159, 1473, 1964, 2196, 2318, 2946, 3477, 4419, 4636, 5892, 6954, 8838, 9329, 10431, 13908, 17676, 18658, 20862, 27987, 29951, 37316, 41724, 55974, 59902, 83961, 89853, 111948, 119804, 167922, 179706, 269559, 335844, 359412, 539118, 569069, 1078236, 1138138, 1707207, 2276276, 3414414, 5121621, 6828828, 10243242, 20486484]

約数ペア:

[(1, 20486484), (2, 10243242), (3, 6828828), (4, 5121621), (6, 3414414), (9, 2276276), (12, 1707207), (18, 1138138), (19, 1078236), (36, 569069), (38, 539118), (57, 359412), (61, 335844), (76, 269559), (114, 179706), (122, 167922), (171, 119804), (183, 111948), (228, 89853), (244, 83961), (342, 59902), (366, 55974), (491, 41724), (549, 37316), (684, 29951), (732, 27987), (982, 20862), (1098, 18658), (1159, 17676), (1473, 13908), (1964, 10431), (2196, 9329), (2318, 8838), (2946, 6954), (3477, 5892), (4419, 4636)]