21560490

素因数分解:

$2^1\times 3^2\times 5^1\times 7^2\times {\mathrm{4889}}^1$

素因数の和:4916

約数の個数: 72

約数和(自身を含む): 65222820

約数和(自身を除く): 43662330

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 49, 63, 70, 90, 98, 105, 126, 147, 210, 245, 294, 315, 441, 490, 630, 735, 882, 1470, 2205, 4410, 4889, 9778, 14667, 24445, 29334, 34223, 44001, 48890, 68446, 73335, 88002, 102669, 146670, 171115, 205338, 220005, 239561, 308007, 342230, 440010, 479122, 513345, 616014, 718683, 1026690, 1197805, 1437366, 1540035, 2156049, 2395610, 3080070, 3593415, 4312098, 7186830, 10780245, 21560490]

約数ペア:

[(1, 21560490), (2, 10780245), (3, 7186830), (5, 4312098), (6, 3593415), (7, 3080070), (9, 2395610), (10, 2156049), (14, 1540035), (15, 1437366), (18, 1197805), (21, 1026690), (30, 718683), (35, 616014), (42, 513345), (45, 479122), (49, 440010), (63, 342230), (70, 308007), (90, 239561), (98, 220005), (105, 205338), (126, 171115), (147, 146670), (210, 102669), (245, 88002), (294, 73335), (315, 68446), (441, 48890), (490, 44001), (630, 34223), (735, 29334), (882, 24445), (1470, 14667), (2205, 9778), (4410, 4889)]