21565860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{21143}}^1$

素因数の和:21172

約数の個数: 48

約数和(自身を含む): 63939456

約数和(自身を除く): 42373596

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 21143, 42286, 63429, 84572, 105715, 126858, 211430, 253716, 317145, 359431, 422860, 634290, 718862, 1078293, 1268580, 1437724, 1797155, 2156586, 3594310, 4313172, 5391465, 7188620, 10782930, 21565860]

約数ペア:

[(1, 21565860), (2, 10782930), (3, 7188620), (4, 5391465), (5, 4313172), (6, 3594310), (10, 2156586), (12, 1797155), (15, 1437724), (17, 1268580), (20, 1078293), (30, 718862), (34, 634290), (51, 422860), (60, 359431), (68, 317145), (85, 253716), (102, 211430), (170, 126858), (204, 105715), (255, 84572), (340, 63429), (510, 42286), (1020, 21143)]