20001376

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{491}}^1$

素因数の和:587

約数の個数: 48

約数和(自身を含む): 42154560

約数和(自身を除く): 22153184

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 67, 76, 134, 152, 268, 304, 491, 536, 608, 982, 1072, 1273, 1964, 2144, 2546, 3928, 5092, 7856, 9329, 10184, 15712, 18658, 20368, 32897, 37316, 40736, 65794, 74632, 131588, 149264, 263176, 298528, 526352, 625043, 1052704, 1250086, 2500172, 5000344, 10000688, 20001376]

約数ペア:

[(1, 20001376), (2, 10000688), (4, 5000344), (8, 2500172), (16, 1250086), (19, 1052704), (32, 625043), (38, 526352), (67, 298528), (76, 263176), (134, 149264), (152, 131588), (268, 74632), (304, 65794), (491, 40736), (536, 37316), (608, 32897), (982, 20368), (1072, 18658), (1273, 15712), (1964, 10184), (2144, 9329), (2546, 7856), (3928, 5092)]