28990860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{89}}^2$

素因数の和:251

約数の個数: 72

約数和(自身を含む): 83442576

約数和(自身を除く): 54451716

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 61, 89, 122, 178, 183, 244, 267, 305, 356, 366, 445, 534, 610, 732, 890, 915, 1068, 1220, 1335, 1780, 1830, 2670, 3660, 5340, 5429, 7921, 10858, 15842, 16287, 21716, 23763, 27145, 31684, 32574, 39605, 47526, 54290, 65148, 79210, 81435, 95052, 108580, 118815, 158420, 162870, 237630, 325740, 475260, 483181, 966362, 1449543, 1932724, 2415905, 2899086, 4831810, 5798172, 7247715, 9663620, 14495430, 28990860]

約数ペア:

[(1, 28990860), (2, 14495430), (3, 9663620), (4, 7247715), (5, 5798172), (6, 4831810), (10, 2899086), (12, 2415905), (15, 1932724), (20, 1449543), (30, 966362), (60, 483181), (61, 475260), (89, 325740), (122, 237630), (178, 162870), (183, 158420), (244, 118815), (267, 108580), (305, 95052), (356, 81435), (366, 79210), (445, 65148), (534, 54290), (610, 47526), (732, 39605), (890, 32574), (915, 31684), (1068, 27145), (1220, 23763), (1335, 21716), (1780, 16287), (1830, 15842), (2670, 10858), (3660, 7921), (5340, 5429)]