278329700

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{2843}}^1$

素因数の和:2957

約数の個数: 72

約数和(自身を含む): 666519840

約数和(自身を除く): 388190140

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 89, 100, 110, 178, 220, 275, 356, 445, 550, 890, 979, 1100, 1780, 1958, 2225, 2843, 3916, 4450, 4895, 5686, 8900, 9790, 11372, 14215, 19580, 24475, 28430, 31273, 48950, 56860, 62546, 71075, 97900, 125092, 142150, 156365, 253027, 284300, 312730, 506054, 625460, 781825, 1012108, 1265135, 1563650, 2530270, 2783297, 3127300, 5060540, 5566594, 6325675, 11133188, 12651350, 13916485, 25302700, 27832970, 55665940, 69582425, 139164850, 278329700]

約数ペア:

[(1, 278329700), (2, 139164850), (4, 69582425), (5, 55665940), (10, 27832970), (11, 25302700), (20, 13916485), (22, 12651350), (25, 11133188), (44, 6325675), (50, 5566594), (55, 5060540), (89, 3127300), (100, 2783297), (110, 2530270), (178, 1563650), (220, 1265135), (275, 1012108), (356, 781825), (445, 625460), (550, 506054), (890, 312730), (979, 284300), (1100, 253027), (1780, 156365), (1958, 142150), (2225, 125092), (2843, 97900), (3916, 71075), (4450, 62546), (4895, 56860), (5686, 48950), (8900, 31273), (9790, 28430), (11372, 24475), (14215, 19580)]