18501890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1$

素因数の和:215

約数の個数: 64

約数和(自身を含む): 38817792

約数和(自身を除く): 20315902

約数列:

[1, 2, 5, 10, 11, 22, 23, 46, 55, 71, 103, 110, 115, 142, 206, 230, 253, 355, 506, 515, 710, 781, 1030, 1133, 1265, 1562, 1633, 2266, 2369, 2530, 3266, 3905, 4738, 5665, 7313, 7810, 8165, 11330, 11845, 14626, 16330, 17963, 23690, 26059, 35926, 36565, 52118, 73130, 80443, 89815, 130295, 160886, 168199, 179630, 260590, 336398, 402215, 804430, 840995, 1681990, 1850189, 3700378, 9250945, 18501890]

約数ペア:

[(1, 18501890), (2, 9250945), (5, 3700378), (10, 1850189), (11, 1681990), (22, 840995), (23, 804430), (46, 402215), (55, 336398), (71, 260590), (103, 179630), (110, 168199), (115, 160886), (142, 130295), (206, 89815), (230, 80443), (253, 73130), (355, 52118), (506, 36565), (515, 35926), (710, 26059), (781, 23690), (1030, 17963), (1133, 16330), (1265, 14626), (1562, 11845), (1633, 11330), (2266, 8165), (2369, 7810), (2530, 7313), (3266, 5665), (3905, 4738)]