20640200

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{641}}^1$

素因数の和:687

約数の個数: 96

約数和(自身を含む): 57317760

約数和(自身を除く): 36677560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 25, 28, 35, 40, 46, 50, 56, 70, 92, 100, 115, 140, 161, 175, 184, 200, 230, 280, 322, 350, 460, 575, 641, 644, 700, 805, 920, 1150, 1282, 1288, 1400, 1610, 2300, 2564, 3205, 3220, 4025, 4487, 4600, 5128, 6410, 6440, 8050, 8974, 12820, 14743, 16025, 16100, 17948, 22435, 25640, 29486, 32050, 32200, 35896, 44870, 58972, 64100, 73715, 89740, 103201, 112175, 117944, 128200, 147430, 179480, 206402, 224350, 294860, 368575, 412804, 448700, 516005, 589720, 737150, 825608, 897400, 1032010, 1474300, 2064020, 2580025, 2948600, 4128040, 5160050, 10320100, 20640200]

約数ペア:

[(1, 20640200), (2, 10320100), (4, 5160050), (5, 4128040), (7, 2948600), (8, 2580025), (10, 2064020), (14, 1474300), (20, 1032010), (23, 897400), (25, 825608), (28, 737150), (35, 589720), (40, 516005), (46, 448700), (50, 412804), (56, 368575), (70, 294860), (92, 224350), (100, 206402), (115, 179480), (140, 147430), (161, 128200), (175, 117944), (184, 112175), (200, 103201), (230, 89740), (280, 73715), (322, 64100), (350, 58972), (460, 44870), (575, 35896), (641, 32200), (644, 32050), (700, 29486), (805, 25640), (920, 22435), (1150, 17948), (1282, 16100), (1288, 16025), (1400, 14743), (1610, 12820), (2300, 8974), (2564, 8050), (3205, 6440), (3220, 6410), (4025, 5128), (4487, 4600)]