2403940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{223}}^1$

素因数の和:257

約数の個数: 72

約数和(自身を含む): 6435072

約数和(自身を除く): 4031132

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 49, 55, 70, 77, 98, 110, 140, 154, 196, 220, 223, 245, 308, 385, 446, 490, 539, 770, 892, 980, 1078, 1115, 1540, 1561, 2156, 2230, 2453, 2695, 3122, 4460, 4906, 5390, 6244, 7805, 9812, 10780, 10927, 12265, 15610, 17171, 21854, 24530, 31220, 34342, 43708, 49060, 54635, 68684, 85855, 109270, 120197, 171710, 218540, 240394, 343420, 480788, 600985, 1201970, 2403940]

約数ペア:

[(1, 2403940), (2, 1201970), (4, 600985), (5, 480788), (7, 343420), (10, 240394), (11, 218540), (14, 171710), (20, 120197), (22, 109270), (28, 85855), (35, 68684), (44, 54635), (49, 49060), (55, 43708), (70, 34342), (77, 31220), (98, 24530), (110, 21854), (140, 17171), (154, 15610), (196, 12265), (220, 10927), (223, 10780), (245, 9812), (308, 7805), (385, 6244), (446, 5390), (490, 4906), (539, 4460), (770, 3122), (892, 2695), (980, 2453), (1078, 2230), (1115, 2156), (1540, 1561)]