78538240

素因数分解:

$2^9\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2789}}^1$

素因数の和:2823

約数の個数: 80

約数和(自身を含む): 205500240

約数和(自身を除く): 126962000

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 256, 320, 352, 440, 512, 640, 704, 880, 1280, 1408, 1760, 2560, 2789, 2816, 3520, 5578, 5632, 7040, 11156, 13945, 14080, 22312, 27890, 28160, 30679, 44624, 55780, 61358, 89248, 111560, 122716, 153395, 178496, 223120, 245432, 306790, 356992, 446240, 490864, 613580, 713984, 892480, 981728, 1227160, 1427968, 1784960, 1963456, 2454320, 3569920, 3926912, 4908640, 7139840, 7853824, 9817280, 15707648, 19634560, 39269120, 78538240]

約数ペア:

[(1, 78538240), (2, 39269120), (4, 19634560), (5, 15707648), (8, 9817280), (10, 7853824), (11, 7139840), (16, 4908640), (20, 3926912), (22, 3569920), (32, 2454320), (40, 1963456), (44, 1784960), (55, 1427968), (64, 1227160), (80, 981728), (88, 892480), (110, 713984), (128, 613580), (160, 490864), (176, 446240), (220, 356992), (256, 306790), (320, 245432), (352, 223120), (440, 178496), (512, 153395), (640, 122716), (704, 111560), (880, 89248), (1280, 61358), (1408, 55780), (1760, 44624), (2560, 30679), (2789, 28160), (2816, 27890), (3520, 22312), (5578, 14080), (5632, 13945), (7040, 11156)]