21439210

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1$

素因数の和:235

約数の個数: 64

約数和(自身を含む): 44906400

約数和(自身を除く): 23467190

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 89, 109, 130, 170, 178, 218, 221, 442, 445, 545, 890, 1090, 1105, 1157, 1417, 1513, 1853, 2210, 2314, 2834, 3026, 3706, 5785, 7085, 7565, 9265, 9701, 11570, 14170, 15130, 18530, 19402, 19669, 24089, 39338, 48178, 48505, 97010, 98345, 120445, 126113, 164917, 196690, 240890, 252226, 329834, 630565, 824585, 1261130, 1649170, 2143921, 4287842, 10719605, 21439210]

約数ペア:

[(1, 21439210), (2, 10719605), (5, 4287842), (10, 2143921), (13, 1649170), (17, 1261130), (26, 824585), (34, 630565), (65, 329834), (85, 252226), (89, 240890), (109, 196690), (130, 164917), (170, 126113), (178, 120445), (218, 98345), (221, 97010), (442, 48505), (445, 48178), (545, 39338), (890, 24089), (1090, 19669), (1105, 19402), (1157, 18530), (1417, 15130), (1513, 14170), (1853, 11570), (2210, 9701), (2314, 9265), (2834, 7565), (3026, 7085), (3706, 5785)]