2439220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{131}}^1$

素因数の和:173

約数の個数: 72

約数和(自身を含む): 6320160

約数和(自身を除く): 3880940

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 49, 70, 76, 95, 98, 131, 133, 140, 190, 196, 245, 262, 266, 380, 490, 524, 532, 655, 665, 917, 931, 980, 1310, 1330, 1834, 1862, 2489, 2620, 2660, 3668, 3724, 4585, 4655, 4978, 6419, 9170, 9310, 9956, 12445, 12838, 17423, 18340, 18620, 24890, 25676, 32095, 34846, 49780, 64190, 69692, 87115, 121961, 128380, 174230, 243922, 348460, 487844, 609805, 1219610, 2439220]

約数ペア:

[(1, 2439220), (2, 1219610), (4, 609805), (5, 487844), (7, 348460), (10, 243922), (14, 174230), (19, 128380), (20, 121961), (28, 87115), (35, 69692), (38, 64190), (49, 49780), (70, 34846), (76, 32095), (95, 25676), (98, 24890), (131, 18620), (133, 18340), (140, 17423), (190, 12838), (196, 12445), (245, 9956), (262, 9310), (266, 9170), (380, 6419), (490, 4978), (524, 4655), (532, 4585), (655, 3724), (665, 3668), (917, 2660), (931, 2620), (980, 2489), (1310, 1862), (1330, 1834)]