20007825280

素因数分解:

$2^7\times 5^1\times {\mathrm{97}}^1\times {\mathrm{101}}^1\times {\mathrm{3191}}^1$

素因数の和:3408

約数の個数: 128

約数和(自身を含む): 48818064960

約数和(自身を除く): 28810239680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 97, 101, 128, 160, 194, 202, 320, 388, 404, 485, 505, 640, 776, 808, 970, 1010, 1552, 1616, 1940, 2020, 3104, 3191, 3232, 3880, 4040, 6208, 6382, 6464, 7760, 8080, 9797, 12416, 12764, 12928, 15520, 15955, 16160, 19594, 25528, 31040, 31910, 32320, 39188, 48985, 51056, 62080, 63820, 64640, 78376, 97970, 102112, 127640, 156752, 195940, 204224, 255280, 309527, 313504, 322291, 391880, 408448, 510560, 619054, 627008, 644582, 783760, 1021120, 1238108, 1254016, 1289164, 1547635, 1567520, 1611455, 2042240, 2476216, 2578328, 3095270, 3135040, 3222910, 4952432, 5156656, 6190540, 6270080, 6445820, 9904864, 10313312, 12381080, 12891640, 19809728, 20626624, 24762160, 25783280, 31262227, 39619456, 41253248, 49524320, 51566560, 62524454, 99048640, 103133120, 125048908, 156311135, 198097280, 206266240, 250097816, 312622270, 500195632, 625244540, 1000391264, 1250489080, 2000782528, 2500978160, 4001565056, 5001956320, 10003912640, 20007825280]

約数ペア:

[(1, 20007825280), (2, 10003912640), (4, 5001956320), (5, 4001565056), (8, 2500978160), (10, 2000782528), (16, 1250489080), (20, 1000391264), (32, 625244540), (40, 500195632), (64, 312622270), (80, 250097816), (97, 206266240), (101, 198097280), (128, 156311135), (160, 125048908), (194, 103133120), (202, 99048640), (320, 62524454), (388, 51566560), (404, 49524320), (485, 41253248), (505, 39619456), (640, 31262227), (776, 25783280), (808, 24762160), (970, 20626624), (1010, 19809728), (1552, 12891640), (1616, 12381080), (1940, 10313312), (2020, 9904864), (3104, 6445820), (3191, 6270080), (3232, 6190540), (3880, 5156656), (4040, 4952432), (6208, 3222910), (6382, 3135040), (6464, 3095270), (7760, 2578328), (8080, 2476216), (9797, 2042240), (12416, 1611455), (12764, 1567520), (12928, 1547635), (15520, 1289164), (15955, 1254016), (16160, 1238108), (19594, 1021120), (25528, 783760), (31040, 644582), (31910, 627008), (32320, 619054), (39188, 510560), (48985, 408448), (51056, 391880), (62080, 322291), (63820, 313504), (64640, 309527), (78376, 255280), (97970, 204224), (102112, 195940), (127640, 156752)]