28789640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{1109}}^1$

素因数の和:1190

約数の個数: 64

約数和(自身を含む): 71928000

約数和(自身を除く): 43138360

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 59, 88, 110, 118, 220, 236, 295, 440, 472, 590, 649, 1109, 1180, 1298, 2218, 2360, 2596, 3245, 4436, 5192, 5545, 6490, 8872, 11090, 12199, 12980, 22180, 24398, 25960, 44360, 48796, 60995, 65431, 97592, 121990, 130862, 243980, 261724, 327155, 487960, 523448, 654310, 719741, 1308620, 1439482, 2617240, 2878964, 3598705, 5757928, 7197410, 14394820, 28789640]

約数ペア:

[(1, 28789640), (2, 14394820), (4, 7197410), (5, 5757928), (8, 3598705), (10, 2878964), (11, 2617240), (20, 1439482), (22, 1308620), (40, 719741), (44, 654310), (55, 523448), (59, 487960), (88, 327155), (110, 261724), (118, 243980), (220, 130862), (236, 121990), (295, 97592), (440, 65431), (472, 60995), (590, 48796), (649, 44360), (1109, 25960), (1180, 24398), (1298, 22180), (2218, 12980), (2360, 12199), (2596, 11090), (3245, 8872), (4436, 6490), (5192, 5545)]