81784960

素因数分解:

$2^7\times 5^1\times {\mathrm{17}}^1\times {\mathrm{7517}}^1$

素因数の和:7553

約数の個数: 64

約数和(自身を含む): 207045720

約数和(自身を除く): 125260760

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 272, 320, 340, 544, 640, 680, 1088, 1360, 2176, 2720, 5440, 7517, 10880, 15034, 30068, 37585, 60136, 75170, 120272, 127789, 150340, 240544, 255578, 300680, 481088, 511156, 601360, 638945, 962176, 1022312, 1202720, 1277890, 2044624, 2405440, 2555780, 4089248, 4810880, 5111560, 8178496, 10223120, 16356992, 20446240, 40892480, 81784960]

約数ペア:

[(1, 81784960), (2, 40892480), (4, 20446240), (5, 16356992), (8, 10223120), (10, 8178496), (16, 5111560), (17, 4810880), (20, 4089248), (32, 2555780), (34, 2405440), (40, 2044624), (64, 1277890), (68, 1202720), (80, 1022312), (85, 962176), (128, 638945), (136, 601360), (160, 511156), (170, 481088), (272, 300680), (320, 255578), (340, 240544), (544, 150340), (640, 127789), (680, 120272), (1088, 75170), (1360, 60136), (2176, 37585), (2720, 30068), (5440, 15034), (7517, 10880)]