20653640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{4339}}^1$

素因数の和:4374

約数の個数: 64

約数和(自身を含む): 56246400

約数和(自身を除く): 35592760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 56, 68, 70, 85, 119, 136, 140, 170, 238, 280, 340, 476, 595, 680, 952, 1190, 2380, 4339, 4760, 8678, 17356, 21695, 30373, 34712, 43390, 60746, 73763, 86780, 121492, 147526, 151865, 173560, 242984, 295052, 303730, 368815, 516341, 590104, 607460, 737630, 1032682, 1214920, 1475260, 2065364, 2581705, 2950520, 4130728, 5163410, 10326820, 20653640]

約数ペア:

[(1, 20653640), (2, 10326820), (4, 5163410), (5, 4130728), (7, 2950520), (8, 2581705), (10, 2065364), (14, 1475260), (17, 1214920), (20, 1032682), (28, 737630), (34, 607460), (35, 590104), (40, 516341), (56, 368815), (68, 303730), (70, 295052), (85, 242984), (119, 173560), (136, 151865), (140, 147526), (170, 121492), (238, 86780), (280, 73763), (340, 60746), (476, 43390), (595, 34712), (680, 30373), (952, 21695), (1190, 17356), (2380, 8678), (4339, 4760)]