20745576

素因数分解:

$2^3\times 3^2\times {\mathrm{17}}^2\times {\mathrm{997}}^1$

素因数の和:1043

約数の個数: 72

約数和(自身を含む): 59745270

約数和(自身を除く): 38999694

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 17, 18, 24, 34, 36, 51, 68, 72, 102, 136, 153, 204, 289, 306, 408, 578, 612, 867, 997, 1156, 1224, 1734, 1994, 2312, 2601, 2991, 3468, 3988, 5202, 5982, 6936, 7976, 8973, 10404, 11964, 16949, 17946, 20808, 23928, 33898, 35892, 50847, 67796, 71784, 101694, 135592, 152541, 203388, 288133, 305082, 406776, 576266, 610164, 864399, 1152532, 1220328, 1728798, 2305064, 2593197, 3457596, 5186394, 6915192, 10372788, 20745576]

約数ペア:

[(1, 20745576), (2, 10372788), (3, 6915192), (4, 5186394), (6, 3457596), (8, 2593197), (9, 2305064), (12, 1728798), (17, 1220328), (18, 1152532), (24, 864399), (34, 610164), (36, 576266), (51, 406776), (68, 305082), (72, 288133), (102, 203388), (136, 152541), (153, 135592), (204, 101694), (289, 71784), (306, 67796), (408, 50847), (578, 35892), (612, 33898), (867, 23928), (997, 20808), (1156, 17946), (1224, 16949), (1734, 11964), (1994, 10404), (2312, 8973), (2601, 7976), (2991, 6936), (3468, 5982), (3988, 5202)]