1721862500

素因数分解:

$2^2\times 5^5\times {\mathrm{139}}^1\times {\mathrm{991}}^1$

素因数の和:1159

約数の個数: 72

約数和(自身を含む): 3797256960

約数和(自身を除く): 2075394460

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 139, 250, 278, 500, 556, 625, 695, 991, 1250, 1390, 1982, 2500, 2780, 3125, 3475, 3964, 4955, 6250, 6950, 9910, 12500, 13900, 17375, 19820, 24775, 34750, 49550, 69500, 86875, 99100, 123875, 137749, 173750, 247750, 275498, 347500, 434375, 495500, 550996, 619375, 688745, 868750, 1238750, 1377490, 1737500, 2477500, 2754980, 3096875, 3443725, 6193750, 6887450, 12387500, 13774900, 17218625, 34437250, 68874500, 86093125, 172186250, 344372500, 430465625, 860931250, 1721862500]

約数ペア:

[(1, 1721862500), (2, 860931250), (4, 430465625), (5, 344372500), (10, 172186250), (20, 86093125), (25, 68874500), (50, 34437250), (100, 17218625), (125, 13774900), (139, 12387500), (250, 6887450), (278, 6193750), (500, 3443725), (556, 3096875), (625, 2754980), (695, 2477500), (991, 1737500), (1250, 1377490), (1390, 1238750), (1982, 868750), (2500, 688745), (2780, 619375), (3125, 550996), (3475, 495500), (3964, 434375), (4955, 347500), (6250, 275498), (6950, 247750), (9910, 173750), (12500, 137749), (13900, 123875), (17375, 99100), (19820, 86875), (24775, 69500), (34750, 49550)]