28758990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1993}}^1$

素因数の和:2053

約数の個数: 64

約数和(自身を含む): 76378176

約数和(自身を除く): 47619186

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 37, 39, 65, 74, 78, 111, 130, 185, 195, 222, 370, 390, 481, 555, 962, 1110, 1443, 1993, 2405, 2886, 3986, 4810, 5979, 7215, 9965, 11958, 14430, 19930, 25909, 29895, 51818, 59790, 73741, 77727, 129545, 147482, 155454, 221223, 259090, 368705, 388635, 442446, 737410, 777270, 958633, 1106115, 1917266, 2212230, 2875899, 4793165, 5751798, 9586330, 14379495, 28758990]

約数ペア:

[(1, 28758990), (2, 14379495), (3, 9586330), (5, 5751798), (6, 4793165), (10, 2875899), (13, 2212230), (15, 1917266), (26, 1106115), (30, 958633), (37, 777270), (39, 737410), (65, 442446), (74, 388635), (78, 368705), (111, 259090), (130, 221223), (185, 155454), (195, 147482), (222, 129545), (370, 77727), (390, 73741), (481, 59790), (555, 51818), (962, 29895), (1110, 25909), (1443, 19930), (1993, 14430), (2405, 11958), (2886, 9965), (3986, 7215), (4810, 5979)]