19711840

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{7247}}^1$

素因数の和:7279

約数の個数: 48

約数和(自身を含む): 49315392

約数和(自身を除く): 29603552

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 340, 544, 680, 1360, 2720, 7247, 14494, 28988, 36235, 57976, 72470, 115952, 123199, 144940, 231904, 246398, 289880, 492796, 579760, 615995, 985592, 1159520, 1231990, 1971184, 2463980, 3942368, 4927960, 9855920, 19711840]

約数ペア:

[(1, 19711840), (2, 9855920), (4, 4927960), (5, 3942368), (8, 2463980), (10, 1971184), (16, 1231990), (17, 1159520), (20, 985592), (32, 615995), (34, 579760), (40, 492796), (68, 289880), (80, 246398), (85, 231904), (136, 144940), (160, 123199), (170, 115952), (272, 72470), (340, 57976), (544, 36235), (680, 28988), (1360, 14494), (2720, 7247)]