81234880

素因数分解:

$2^6\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{431}}^1$

素因数の和:498

約数の個数: 112

約数和(自身を含む): 210677760

約数和(自身を除く): 129442880

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 32, 38, 40, 62, 64, 76, 80, 95, 124, 152, 155, 160, 190, 248, 304, 310, 320, 380, 431, 496, 589, 608, 620, 760, 862, 992, 1178, 1216, 1240, 1520, 1724, 1984, 2155, 2356, 2480, 2945, 3040, 3448, 4310, 4712, 4960, 5890, 6080, 6896, 8189, 8620, 9424, 9920, 11780, 13361, 13792, 16378, 17240, 18848, 23560, 26722, 27584, 32756, 34480, 37696, 40945, 47120, 53444, 65512, 66805, 68960, 81890, 94240, 106888, 131024, 133610, 137920, 163780, 188480, 213776, 253859, 262048, 267220, 327560, 427552, 507718, 524096, 534440, 655120, 855104, 1015436, 1068880, 1269295, 1310240, 2030872, 2137760, 2538590, 2620480, 4061744, 4275520, 5077180, 8123488, 10154360, 16246976, 20308720, 40617440, 81234880]

約数ペア:

[(1, 81234880), (2, 40617440), (4, 20308720), (5, 16246976), (8, 10154360), (10, 8123488), (16, 5077180), (19, 4275520), (20, 4061744), (31, 2620480), (32, 2538590), (38, 2137760), (40, 2030872), (62, 1310240), (64, 1269295), (76, 1068880), (80, 1015436), (95, 855104), (124, 655120), (152, 534440), (155, 524096), (160, 507718), (190, 427552), (248, 327560), (304, 267220), (310, 262048), (320, 253859), (380, 213776), (431, 188480), (496, 163780), (589, 137920), (608, 133610), (620, 131024), (760, 106888), (862, 94240), (992, 81890), (1178, 68960), (1216, 66805), (1240, 65512), (1520, 53444), (1724, 47120), (1984, 40945), (2155, 37696), (2356, 34480), (2480, 32756), (2945, 27584), (3040, 26722), (3448, 23560), (4310, 18848), (4712, 17240), (4960, 16378), (5890, 13792), (6080, 13361), (6896, 11780), (8189, 9920), (8620, 9424)]