408020520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{653}}^1$

素因数の和:835

約数の個数: 128

約数和(自身を含む): 1265725440

約数和(自身を除く): 857704920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 41, 60, 82, 120, 123, 127, 164, 205, 246, 254, 328, 381, 410, 492, 508, 615, 635, 653, 762, 820, 984, 1016, 1230, 1270, 1306, 1524, 1640, 1905, 1959, 2460, 2540, 2612, 3048, 3265, 3810, 3918, 4920, 5080, 5207, 5224, 6530, 7620, 7836, 9795, 10414, 13060, 15240, 15621, 15672, 19590, 20828, 26035, 26120, 26773, 31242, 39180, 41656, 52070, 53546, 62484, 78105, 78360, 80319, 82931, 104140, 107092, 124968, 133865, 156210, 160638, 165862, 208280, 214184, 248793, 267730, 312420, 321276, 331724, 401595, 414655, 497586, 535460, 624840, 642552, 663448, 803190, 829310, 995172, 1070920, 1243965, 1606380, 1658620, 1990344, 2487930, 3212760, 3317240, 3400171, 4975860, 6800342, 9951720, 10200513, 13600684, 17000855, 20401026, 27201368, 34001710, 40802052, 51002565, 68003420, 81604104, 102005130, 136006840, 204010260, 408020520]

約数ペア:

[(1, 408020520), (2, 204010260), (3, 136006840), (4, 102005130), (5, 81604104), (6, 68003420), (8, 51002565), (10, 40802052), (12, 34001710), (15, 27201368), (20, 20401026), (24, 17000855), (30, 13600684), (40, 10200513), (41, 9951720), (60, 6800342), (82, 4975860), (120, 3400171), (123, 3317240), (127, 3212760), (164, 2487930), (205, 1990344), (246, 1658620), (254, 1606380), (328, 1243965), (381, 1070920), (410, 995172), (492, 829310), (508, 803190), (615, 663448), (635, 642552), (653, 624840), (762, 535460), (820, 497586), (984, 414655), (1016, 401595), (1230, 331724), (1270, 321276), (1306, 312420), (1524, 267730), (1640, 248793), (1905, 214184), (1959, 208280), (2460, 165862), (2540, 160638), (2612, 156210), (3048, 133865), (3265, 124968), (3810, 107092), (3918, 104140), (4920, 82931), (5080, 80319), (5207, 78360), (5224, 78105), (6530, 62484), (7620, 53546), (7836, 52070), (9795, 41656), (10414, 39180), (13060, 31242), (15240, 26773), (15621, 26120), (15672, 26035), (19590, 20828)]