30811520

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1553}}^1$

素因数の和:1603

約数の個数: 64

約数和(自身を含む): 76083840

約数和(自身を除く): 45272320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 620, 640, 992, 1240, 1553, 1984, 2480, 3106, 3968, 4960, 6212, 7765, 9920, 12424, 15530, 19840, 24848, 31060, 48143, 49696, 62120, 96286, 99392, 124240, 192572, 198784, 240715, 248480, 385144, 481430, 496960, 770288, 962860, 993920, 1540576, 1925720, 3081152, 3851440, 6162304, 7702880, 15405760, 30811520]

約数ペア:

[(1, 30811520), (2, 15405760), (4, 7702880), (5, 6162304), (8, 3851440), (10, 3081152), (16, 1925720), (20, 1540576), (31, 993920), (32, 962860), (40, 770288), (62, 496960), (64, 481430), (80, 385144), (124, 248480), (128, 240715), (155, 198784), (160, 192572), (248, 124240), (310, 99392), (320, 96286), (496, 62120), (620, 49696), (640, 48143), (992, 31060), (1240, 24848), (1553, 19840), (1984, 15530), (2480, 12424), (3106, 9920), (3968, 7765), (4960, 6212)]