19707520

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1$

素因数の和:162

約数の個数: 128

約数和(自身を含む): 55520640

約数和(自身を除く): 35813120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 53, 56, 64, 70, 80, 83, 106, 112, 128, 140, 160, 166, 212, 224, 265, 280, 320, 332, 371, 415, 424, 448, 530, 560, 581, 640, 664, 742, 830, 848, 896, 1060, 1120, 1162, 1328, 1484, 1660, 1696, 1855, 2120, 2240, 2324, 2656, 2905, 2968, 3320, 3392, 3710, 4240, 4399, 4480, 4648, 5312, 5810, 5936, 6640, 6784, 7420, 8480, 8798, 9296, 10624, 11620, 11872, 13280, 14840, 16960, 17596, 18592, 21995, 23240, 23744, 26560, 29680, 30793, 33920, 35192, 37184, 43990, 46480, 47488, 53120, 59360, 61586, 70384, 74368, 87980, 92960, 118720, 123172, 140768, 153965, 175960, 185920, 237440, 246344, 281536, 307930, 351920, 371840, 492688, 563072, 615860, 703840, 985376, 1231720, 1407680, 1970752, 2463440, 2815360, 3941504, 4926880, 9853760, 19707520]

約数ペア:

[(1, 19707520), (2, 9853760), (4, 4926880), (5, 3941504), (7, 2815360), (8, 2463440), (10, 1970752), (14, 1407680), (16, 1231720), (20, 985376), (28, 703840), (32, 615860), (35, 563072), (40, 492688), (53, 371840), (56, 351920), (64, 307930), (70, 281536), (80, 246344), (83, 237440), (106, 185920), (112, 175960), (128, 153965), (140, 140768), (160, 123172), (166, 118720), (212, 92960), (224, 87980), (265, 74368), (280, 70384), (320, 61586), (332, 59360), (371, 53120), (415, 47488), (424, 46480), (448, 43990), (530, 37184), (560, 35192), (581, 33920), (640, 30793), (664, 29680), (742, 26560), (830, 23744), (848, 23240), (896, 21995), (1060, 18592), (1120, 17596), (1162, 16960), (1328, 14840), (1484, 13280), (1660, 11872), (1696, 11620), (1855, 10624), (2120, 9296), (2240, 8798), (2324, 8480), (2656, 7420), (2905, 6784), (2968, 6640), (3320, 5936), (3392, 5810), (3710, 5312), (4240, 4648), (4399, 4480)]