77841920

素因数分解:

$2^9\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2339}}^1$

素因数の和:2375

約数の個数: 80

約数和(自身を含む): 201080880

約数和(自身を除く): 123238960

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 512, 520, 640, 832, 1040, 1280, 1664, 2080, 2339, 2560, 3328, 4160, 4678, 6656, 8320, 9356, 11695, 16640, 18712, 23390, 30407, 33280, 37424, 46780, 60814, 74848, 93560, 121628, 149696, 152035, 187120, 243256, 299392, 304070, 374240, 486512, 598784, 608140, 748480, 973024, 1197568, 1216280, 1496960, 1946048, 2432560, 2993920, 3892096, 4865120, 5987840, 7784192, 9730240, 15568384, 19460480, 38920960, 77841920]

約数ペア:

[(1, 77841920), (2, 38920960), (4, 19460480), (5, 15568384), (8, 9730240), (10, 7784192), (13, 5987840), (16, 4865120), (20, 3892096), (26, 2993920), (32, 2432560), (40, 1946048), (52, 1496960), (64, 1216280), (65, 1197568), (80, 973024), (104, 748480), (128, 608140), (130, 598784), (160, 486512), (208, 374240), (256, 304070), (260, 299392), (320, 243256), (416, 187120), (512, 152035), (520, 149696), (640, 121628), (832, 93560), (1040, 74848), (1280, 60814), (1664, 46780), (2080, 37424), (2339, 33280), (2560, 30407), (3328, 23390), (4160, 18712), (4678, 16640), (6656, 11695), (8320, 9356)]