81869480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1399}}^1$

素因数の和:1447

約数の個数: 128

約数和(自身を含む): 241920000

約数和(自身を除く): 160050520

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 19, 20, 22, 28, 35, 38, 40, 44, 55, 56, 70, 76, 77, 88, 95, 110, 133, 140, 152, 154, 190, 209, 220, 266, 280, 308, 380, 385, 418, 440, 532, 616, 665, 760, 770, 836, 1045, 1064, 1330, 1399, 1463, 1540, 1672, 2090, 2660, 2798, 2926, 3080, 4180, 5320, 5596, 5852, 6995, 7315, 8360, 9793, 11192, 11704, 13990, 14630, 15389, 19586, 26581, 27980, 29260, 30778, 39172, 48965, 53162, 55960, 58520, 61556, 76945, 78344, 97930, 106324, 107723, 123112, 132905, 153890, 186067, 195860, 212648, 215446, 265810, 292391, 307780, 372134, 391720, 430892, 531620, 538615, 584782, 615560, 744268, 861784, 930335, 1063240, 1077230, 1169564, 1461955, 1488536, 1860670, 2046737, 2154460, 2339128, 2923910, 3721340, 4093474, 4308920, 5847820, 7442680, 8186948, 10233685, 11695640, 16373896, 20467370, 40934740, 81869480]

約数ペア:

[(1, 81869480), (2, 40934740), (4, 20467370), (5, 16373896), (7, 11695640), (8, 10233685), (10, 8186948), (11, 7442680), (14, 5847820), (19, 4308920), (20, 4093474), (22, 3721340), (28, 2923910), (35, 2339128), (38, 2154460), (40, 2046737), (44, 1860670), (55, 1488536), (56, 1461955), (70, 1169564), (76, 1077230), (77, 1063240), (88, 930335), (95, 861784), (110, 744268), (133, 615560), (140, 584782), (152, 538615), (154, 531620), (190, 430892), (209, 391720), (220, 372134), (266, 307780), (280, 292391), (308, 265810), (380, 215446), (385, 212648), (418, 195860), (440, 186067), (532, 153890), (616, 132905), (665, 123112), (760, 107723), (770, 106324), (836, 97930), (1045, 78344), (1064, 76945), (1330, 61556), (1399, 58520), (1463, 55960), (1540, 53162), (1672, 48965), (2090, 39172), (2660, 30778), (2798, 29260), (2926, 27980), (3080, 26581), (4180, 19586), (5320, 15389), (5596, 14630), (5852, 13990), (6995, 11704), (7315, 11192), (8360, 9793)]