28198300

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{199}}^1$

素因数の和:335

約数の個数: 72

約数和(自身を含む): 66836000

約数和(自身を除く): 38637700

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 109, 130, 199, 218, 260, 325, 398, 436, 545, 650, 796, 995, 1090, 1300, 1417, 1990, 2180, 2587, 2725, 2834, 3980, 4975, 5174, 5450, 5668, 7085, 9950, 10348, 10900, 12935, 14170, 19900, 21691, 25870, 28340, 35425, 43382, 51740, 64675, 70850, 86764, 108455, 129350, 141700, 216910, 258700, 281983, 433820, 542275, 563966, 1084550, 1127932, 1409915, 2169100, 2819830, 5639660, 7049575, 14099150, 28198300]

約数ペア:

[(1, 28198300), (2, 14099150), (4, 7049575), (5, 5639660), (10, 2819830), (13, 2169100), (20, 1409915), (25, 1127932), (26, 1084550), (50, 563966), (52, 542275), (65, 433820), (100, 281983), (109, 258700), (130, 216910), (199, 141700), (218, 129350), (260, 108455), (325, 86764), (398, 70850), (436, 64675), (545, 51740), (650, 43382), (796, 35425), (995, 28340), (1090, 25870), (1300, 21691), (1417, 19900), (1990, 14170), (2180, 12935), (2587, 10900), (2725, 10348), (2834, 9950), (3980, 7085), (4975, 5668), (5174, 5450)]