20809625780

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{311}}^1\times {\mathrm{37591}}^1$

素因数の和:38000

約数の個数: 48

約数和(自身を含む): 44334501120

約数和(自身を除く): 23524875340

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 311, 356, 445, 622, 890, 1244, 1555, 1780, 3110, 6220, 27679, 37591, 55358, 75182, 110716, 138395, 150364, 187955, 276790, 375910, 553580, 751820, 3345599, 6691198, 11690801, 13382396, 16727995, 23381602, 33455990, 46763204, 58454005, 66911980, 116908010, 233816020, 1040481289, 2080962578, 4161925156, 5202406445, 10404812890, 20809625780]

約数ペア:

[(1, 20809625780), (2, 10404812890), (4, 5202406445), (5, 4161925156), (10, 2080962578), (20, 1040481289), (89, 233816020), (178, 116908010), (311, 66911980), (356, 58454005), (445, 46763204), (622, 33455990), (890, 23381602), (1244, 16727995), (1555, 13382396), (1780, 11690801), (3110, 6691198), (6220, 3345599), (27679, 751820), (37591, 553580), (55358, 375910), (75182, 276790), (110716, 187955), (138395, 150364)]