25001720

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{491}}^1$

素因数の和:588

約数の個数: 64

約数和(自身を含む): 60220800

約数和(自身を除く): 35219080

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 67, 76, 95, 134, 152, 190, 268, 335, 380, 491, 536, 670, 760, 982, 1273, 1340, 1964, 2455, 2546, 2680, 3928, 4910, 5092, 6365, 9329, 9820, 10184, 12730, 18658, 19640, 25460, 32897, 37316, 46645, 50920, 65794, 74632, 93290, 131588, 164485, 186580, 263176, 328970, 373160, 625043, 657940, 1250086, 1315880, 2500172, 3125215, 5000344, 6250430, 12500860, 25001720]

約数ペア:

[(1, 25001720), (2, 12500860), (4, 6250430), (5, 5000344), (8, 3125215), (10, 2500172), (19, 1315880), (20, 1250086), (38, 657940), (40, 625043), (67, 373160), (76, 328970), (95, 263176), (134, 186580), (152, 164485), (190, 131588), (268, 93290), (335, 74632), (380, 65794), (491, 50920), (536, 46645), (670, 37316), (760, 32897), (982, 25460), (1273, 19640), (1340, 18658), (1964, 12730), (2455, 10184), (2546, 9820), (2680, 9329), (3928, 6365), (4910, 5092)]