20188727960

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^2\times {\mathrm{63719}}^1$

素因数の和:63908

約数の個数: 48

約数和(自身を含む): 45941482800

約数和(自身を除く): 25752754840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 7921, 15842, 31684, 39605, 63368, 63719, 79210, 127438, 158420, 254876, 316840, 318595, 509752, 637190, 1274380, 2548760, 5670991, 11341982, 22683964, 28354955, 45367928, 56709910, 113419820, 226839640, 504718199, 1009436398, 2018872796, 2523590995, 4037745592, 5047181990, 10094363980, 20188727960]

約数ペア:

[(1, 20188727960), (2, 10094363980), (4, 5047181990), (5, 4037745592), (8, 2523590995), (10, 2018872796), (20, 1009436398), (40, 504718199), (89, 226839640), (178, 113419820), (356, 56709910), (445, 45367928), (712, 28354955), (890, 22683964), (1780, 11341982), (3560, 5670991), (7921, 2548760), (15842, 1274380), (31684, 637190), (39605, 509752), (63368, 318595), (63719, 316840), (79210, 254876), (127438, 158420)]