18780410

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^3\times {\mathrm{17}}^1\times {\mathrm{83}}^1$

素因数の和:140

約数の個数: 64

約数和(自身を含む): 39844224

約数和(自身を除く): 21063814

約数列:

[1, 2, 5, 10, 11, 17, 22, 34, 55, 83, 85, 110, 121, 166, 170, 187, 242, 374, 415, 605, 830, 913, 935, 1210, 1331, 1411, 1826, 1870, 2057, 2662, 2822, 4114, 4565, 6655, 7055, 9130, 10043, 10285, 13310, 14110, 15521, 20086, 20570, 22627, 31042, 45254, 50215, 77605, 100430, 110473, 113135, 155210, 170731, 220946, 226270, 341462, 552365, 853655, 1104730, 1707310, 1878041, 3756082, 9390205, 18780410]

約数ペア:

[(1, 18780410), (2, 9390205), (5, 3756082), (10, 1878041), (11, 1707310), (17, 1104730), (22, 853655), (34, 552365), (55, 341462), (83, 226270), (85, 220946), (110, 170731), (121, 155210), (166, 113135), (170, 110473), (187, 100430), (242, 77605), (374, 50215), (415, 45254), (605, 31042), (830, 22627), (913, 20570), (935, 20086), (1210, 15521), (1331, 14110), (1411, 13310), (1826, 10285), (1870, 10043), (2057, 9130), (2662, 7055), (2822, 6655), (4114, 4565)]