20131878640

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{427247}}^1$

素因数の和:427310

約数の個数: 80

約数和(自身を含む): 50859601920

約数和(自身を除く): 30727723280

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 38, 40, 62, 76, 80, 95, 124, 152, 155, 190, 248, 304, 310, 380, 496, 589, 620, 760, 1178, 1240, 1520, 2356, 2480, 2945, 4712, 5890, 9424, 11780, 23560, 47120, 427247, 854494, 1708988, 2136235, 3417976, 4272470, 6835952, 8117693, 8544940, 13244657, 16235386, 17089880, 26489314, 32470772, 34179760, 40588465, 52978628, 64941544, 66223285, 81176930, 105957256, 129883088, 132446570, 162353860, 211914512, 251648483, 264893140, 324707720, 503296966, 529786280, 649415440, 1006593932, 1059572560, 1258242415, 2013187864, 2516484830, 4026375728, 5032969660, 10065939320, 20131878640]

約数ペア:

[(1, 20131878640), (2, 10065939320), (4, 5032969660), (5, 4026375728), (8, 2516484830), (10, 2013187864), (16, 1258242415), (19, 1059572560), (20, 1006593932), (31, 649415440), (38, 529786280), (40, 503296966), (62, 324707720), (76, 264893140), (80, 251648483), (95, 211914512), (124, 162353860), (152, 132446570), (155, 129883088), (190, 105957256), (248, 81176930), (304, 66223285), (310, 64941544), (380, 52978628), (496, 40588465), (589, 34179760), (620, 32470772), (760, 26489314), (1178, 17089880), (1240, 16235386), (1520, 13244657), (2356, 8544940), (2480, 8117693), (2945, 6835952), (4712, 4272470), (5890, 3417976), (9424, 2136235), (11780, 1708988), (23560, 854494), (47120, 427247)]