66643980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1987}}^1$

素因数の和:2055

約数の個数: 96

約数和(自身を含む): 205734144

約数和(自身を除く): 139090164

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 43, 52, 60, 65, 78, 86, 129, 130, 156, 172, 195, 215, 258, 260, 390, 430, 516, 559, 645, 780, 860, 1118, 1290, 1677, 1987, 2236, 2580, 2795, 3354, 3974, 5590, 5961, 6708, 7948, 8385, 9935, 11180, 11922, 16770, 19870, 23844, 25831, 29805, 33540, 39740, 51662, 59610, 77493, 85441, 103324, 119220, 129155, 154986, 170882, 256323, 258310, 309972, 341764, 387465, 427205, 512646, 516620, 774930, 854410, 1025292, 1110733, 1281615, 1549860, 1708820, 2221466, 2563230, 3332199, 4442932, 5126460, 5553665, 6664398, 11107330, 13328796, 16660995, 22214660, 33321990, 66643980]

約数ペア:

[(1, 66643980), (2, 33321990), (3, 22214660), (4, 16660995), (5, 13328796), (6, 11107330), (10, 6664398), (12, 5553665), (13, 5126460), (15, 4442932), (20, 3332199), (26, 2563230), (30, 2221466), (39, 1708820), (43, 1549860), (52, 1281615), (60, 1110733), (65, 1025292), (78, 854410), (86, 774930), (129, 516620), (130, 512646), (156, 427205), (172, 387465), (195, 341764), (215, 309972), (258, 258310), (260, 256323), (390, 170882), (430, 154986), (516, 129155), (559, 119220), (645, 103324), (780, 85441), (860, 77493), (1118, 59610), (1290, 51662), (1677, 39740), (1987, 33540), (2236, 29805), (2580, 25831), (2795, 23844), (3354, 19870), (3974, 16770), (5590, 11922), (5961, 11180), (6708, 9935), (7948, 8385)]