20842500

素因数分解:

$2^2\times 3^1\times 5^4\times 7^1\times {\mathrm{397}}^1$

素因数の和:431

約数の個数: 120

約数和(自身を含む): 69627712

約数和(自身を除く): 48785212

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 84, 100, 105, 125, 140, 150, 175, 210, 250, 300, 350, 375, 397, 420, 500, 525, 625, 700, 750, 794, 875, 1050, 1191, 1250, 1500, 1588, 1750, 1875, 1985, 2100, 2382, 2500, 2625, 2779, 3500, 3750, 3970, 4375, 4764, 5250, 5558, 5955, 7500, 7940, 8337, 8750, 9925, 10500, 11116, 11910, 13125, 13895, 16674, 17500, 19850, 23820, 26250, 27790, 29775, 33348, 39700, 41685, 49625, 52500, 55580, 59550, 69475, 83370, 99250, 119100, 138950, 148875, 166740, 198500, 208425, 248125, 277900, 297750, 347375, 416850, 496250, 595500, 694750, 744375, 833700, 992500, 1042125, 1389500, 1488750, 1736875, 2084250, 2977500, 3473750, 4168500, 5210625, 6947500, 10421250, 20842500]

約数ペア:

[(1, 20842500), (2, 10421250), (3, 6947500), (4, 5210625), (5, 4168500), (6, 3473750), (7, 2977500), (10, 2084250), (12, 1736875), (14, 1488750), (15, 1389500), (20, 1042125), (21, 992500), (25, 833700), (28, 744375), (30, 694750), (35, 595500), (42, 496250), (50, 416850), (60, 347375), (70, 297750), (75, 277900), (84, 248125), (100, 208425), (105, 198500), (125, 166740), (140, 148875), (150, 138950), (175, 119100), (210, 99250), (250, 83370), (300, 69475), (350, 59550), (375, 55580), (397, 52500), (420, 49625), (500, 41685), (525, 39700), (625, 33348), (700, 29775), (750, 27790), (794, 26250), (875, 23820), (1050, 19850), (1191, 17500), (1250, 16674), (1500, 13895), (1588, 13125), (1750, 11910), (1875, 11116), (1985, 10500), (2100, 9925), (2382, 8750), (2500, 8337), (2625, 7940), (2779, 7500), (3500, 5955), (3750, 5558), (3970, 5250), (4375, 4764)]