646511944

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1$

素因数の和:231

約数の個数: 128

約数和(自身を含む): 1420231680

約数和(自身を除く): 773719736

約数列:

[1, 2, 4, 8, 13, 26, 31, 41, 52, 62, 67, 73, 82, 104, 124, 134, 146, 164, 248, 268, 292, 328, 403, 533, 536, 584, 806, 871, 949, 1066, 1271, 1612, 1742, 1898, 2077, 2132, 2263, 2542, 2747, 2993, 3224, 3484, 3796, 4154, 4264, 4526, 4891, 5084, 5494, 5986, 6968, 7592, 8308, 9052, 9782, 10168, 10988, 11972, 16523, 16616, 18104, 19564, 21976, 23944, 27001, 29419, 33046, 35711, 38909, 39128, 54002, 58838, 63583, 66092, 71422, 77818, 85157, 92783, 108004, 117676, 127166, 132184, 142844, 151621, 155636, 170314, 185566, 200531, 216008, 235352, 254332, 285688, 303242, 311272, 340628, 371132, 401062, 508664, 606484, 681256, 742264, 802124, 1107041, 1206179, 1212968, 1604248, 1971073, 2214082, 2412358, 2606903, 3942146, 4428164, 4824716, 5213806, 6216461, 7884292, 8856328, 9649432, 10427612, 12432922, 15768584, 20855224, 24865844, 49731688, 80813993, 161627986, 323255972, 646511944]

約数ペア:

[(1, 646511944), (2, 323255972), (4, 161627986), (8, 80813993), (13, 49731688), (26, 24865844), (31, 20855224), (41, 15768584), (52, 12432922), (62, 10427612), (67, 9649432), (73, 8856328), (82, 7884292), (104, 6216461), (124, 5213806), (134, 4824716), (146, 4428164), (164, 3942146), (248, 2606903), (268, 2412358), (292, 2214082), (328, 1971073), (403, 1604248), (533, 1212968), (536, 1206179), (584, 1107041), (806, 802124), (871, 742264), (949, 681256), (1066, 606484), (1271, 508664), (1612, 401062), (1742, 371132), (1898, 340628), (2077, 311272), (2132, 303242), (2263, 285688), (2542, 254332), (2747, 235352), (2993, 216008), (3224, 200531), (3484, 185566), (3796, 170314), (4154, 155636), (4264, 151621), (4526, 142844), (4891, 132184), (5084, 127166), (5494, 117676), (5986, 108004), (6968, 92783), (7592, 85157), (8308, 77818), (9052, 71422), (9782, 66092), (10168, 63583), (10988, 58838), (11972, 54002), (16523, 39128), (16616, 38909), (18104, 35711), (19564, 33046), (21976, 29419), (23944, 27001)]