68643920

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{311}}^1$

素因数の和:444

約数の個数: 80

約数和(自身を含む): 167132160

約数和(自身を除く): 98488240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 89, 124, 155, 178, 248, 310, 311, 356, 445, 496, 620, 622, 712, 890, 1240, 1244, 1424, 1555, 1780, 2480, 2488, 2759, 3110, 3560, 4976, 5518, 6220, 7120, 9641, 11036, 12440, 13795, 19282, 22072, 24880, 27590, 27679, 38564, 44144, 48205, 55180, 55358, 77128, 96410, 110360, 110716, 138395, 154256, 192820, 220720, 221432, 276790, 385640, 442864, 553580, 771280, 858049, 1107160, 1716098, 2214320, 3432196, 4290245, 6864392, 8580490, 13728784, 17160980, 34321960, 68643920]

約数ペア:

[(1, 68643920), (2, 34321960), (4, 17160980), (5, 13728784), (8, 8580490), (10, 6864392), (16, 4290245), (20, 3432196), (31, 2214320), (40, 1716098), (62, 1107160), (80, 858049), (89, 771280), (124, 553580), (155, 442864), (178, 385640), (248, 276790), (310, 221432), (311, 220720), (356, 192820), (445, 154256), (496, 138395), (620, 110716), (622, 110360), (712, 96410), (890, 77128), (1240, 55358), (1244, 55180), (1424, 48205), (1555, 44144), (1780, 38564), (2480, 27679), (2488, 27590), (2759, 24880), (3110, 22072), (3560, 19282), (4976, 13795), (5518, 12440), (6220, 11036), (7120, 9641)]