1378894720

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{347}}^1\times {\mathrm{887}}^1$

素因数の和:1260

約数の個数: 128

約数和(自身を含む): 3782453760

約数和(自身を除く): 2403559040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 280, 320, 347, 448, 560, 640, 694, 887, 896, 1120, 1388, 1735, 1774, 2240, 2429, 2776, 3470, 3548, 4435, 4480, 4858, 5552, 6209, 6940, 7096, 8870, 9716, 11104, 12145, 12418, 13880, 14192, 17740, 19432, 22208, 24290, 24836, 27760, 28384, 31045, 35480, 38864, 44416, 48580, 49672, 55520, 56768, 62090, 70960, 77728, 97160, 99344, 111040, 113536, 124180, 141920, 155456, 194320, 198688, 222080, 248360, 283840, 307789, 310912, 388640, 397376, 496720, 567680, 615578, 777280, 794752, 993440, 1231156, 1538945, 1554560, 1986880, 2154523, 2462312, 3077890, 3973760, 4309046, 4924624, 6155780, 8618092, 9849248, 10772615, 12311560, 17236184, 19698496, 21545230, 24623120, 34472368, 39396992, 43090460, 49246240, 68944736, 86180920, 98492480, 137889472, 172361840, 196984960, 275778944, 344723680, 689447360, 1378894720]

約数ペア:

[(1, 1378894720), (2, 689447360), (4, 344723680), (5, 275778944), (7, 196984960), (8, 172361840), (10, 137889472), (14, 98492480), (16, 86180920), (20, 68944736), (28, 49246240), (32, 43090460), (35, 39396992), (40, 34472368), (56, 24623120), (64, 21545230), (70, 19698496), (80, 17236184), (112, 12311560), (128, 10772615), (140, 9849248), (160, 8618092), (224, 6155780), (280, 4924624), (320, 4309046), (347, 3973760), (448, 3077890), (560, 2462312), (640, 2154523), (694, 1986880), (887, 1554560), (896, 1538945), (1120, 1231156), (1388, 993440), (1735, 794752), (1774, 777280), (2240, 615578), (2429, 567680), (2776, 496720), (3470, 397376), (3548, 388640), (4435, 310912), (4480, 307789), (4858, 283840), (5552, 248360), (6209, 222080), (6940, 198688), (7096, 194320), (8870, 155456), (9716, 141920), (11104, 124180), (12145, 113536), (12418, 111040), (13880, 99344), (14192, 97160), (17740, 77728), (19432, 70960), (22208, 62090), (24290, 56768), (24836, 55520), (27760, 49672), (28384, 48580), (31045, 44416), (35480, 38864)]