2781041620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{640793}}^1$

素因数の和:640840

約数の個数: 48

約数和(自身を含む): 6889817088

約数和(自身を除く): 4108775468

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 640793, 1281586, 2563172, 3203965, 4485551, 6407930, 8971102, 12815860, 17942204, 19864583, 22427755, 39729166, 44855510, 79458332, 89711020, 99322915, 139052081, 198645830, 278104162, 397291660, 556208324, 695260405, 1390520810, 2781041620]

約数ペア:

[(1, 2781041620), (2, 1390520810), (4, 695260405), (5, 556208324), (7, 397291660), (10, 278104162), (14, 198645830), (20, 139052081), (28, 99322915), (31, 89711020), (35, 79458332), (62, 44855510), (70, 39729166), (124, 22427755), (140, 19864583), (155, 17942204), (217, 12815860), (310, 8971102), (434, 6407930), (620, 4485551), (868, 3203965), (1085, 2563172), (2170, 1281586), (4340, 640793)]