28289404

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{137}}^1$

素因数の和:203

約数の個数: 72

約数和(自身を含む): 61831728

約数和(自身を除く): 33542324

約数列:

[1, 2, 4, 11, 13, 19, 22, 26, 38, 44, 52, 76, 137, 143, 209, 247, 274, 286, 361, 418, 494, 548, 572, 722, 836, 988, 1444, 1507, 1781, 2603, 2717, 3014, 3562, 3971, 4693, 5206, 5434, 6028, 7124, 7942, 9386, 10412, 10868, 15884, 18772, 19591, 28633, 33839, 39182, 49457, 51623, 57266, 67678, 78364, 98914, 103246, 114532, 135356, 197828, 206492, 372229, 544027, 642941, 744458, 1088054, 1285882, 1488916, 2176108, 2571764, 7072351, 14144702, 28289404]

約数ペア:

[(1, 28289404), (2, 14144702), (4, 7072351), (11, 2571764), (13, 2176108), (19, 1488916), (22, 1285882), (26, 1088054), (38, 744458), (44, 642941), (52, 544027), (76, 372229), (137, 206492), (143, 197828), (209, 135356), (247, 114532), (274, 103246), (286, 98914), (361, 78364), (418, 67678), (494, 57266), (548, 51623), (572, 49457), (722, 39182), (836, 33839), (988, 28633), (1444, 19591), (1507, 18772), (1781, 15884), (2603, 10868), (2717, 10412), (3014, 9386), (3562, 7942), (3971, 7124), (4693, 6028), (5206, 5434)]