20163840

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1$

素因数の和:172

約数の個数: 144

約数和(自身を含む): 66225600

約数和(自身を除く): 46061760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 59, 60, 64, 80, 89, 96, 118, 120, 128, 160, 177, 178, 192, 236, 240, 256, 267, 295, 320, 354, 356, 384, 445, 472, 480, 534, 590, 640, 708, 712, 768, 885, 890, 944, 960, 1068, 1180, 1280, 1335, 1416, 1424, 1770, 1780, 1888, 1920, 2136, 2360, 2670, 2832, 2848, 3540, 3560, 3776, 3840, 4272, 4720, 5251, 5340, 5664, 5696, 7080, 7120, 7552, 8544, 9440, 10502, 10680, 11328, 11392, 14160, 14240, 15104, 15753, 17088, 18880, 21004, 21360, 22656, 22784, 26255, 28320, 28480, 31506, 34176, 37760, 42008, 42720, 45312, 52510, 56640, 56960, 63012, 68352, 75520, 78765, 84016, 85440, 105020, 113280, 113920, 126024, 157530, 168032, 170880, 210040, 226560, 252048, 315060, 336064, 341760, 420080, 504096, 630120, 672128, 840160, 1008192, 1260240, 1344256, 1680320, 2016384, 2520480, 3360640, 4032768, 5040960, 6721280, 10081920, 20163840]

約数ペア:

[(1, 20163840), (2, 10081920), (3, 6721280), (4, 5040960), (5, 4032768), (6, 3360640), (8, 2520480), (10, 2016384), (12, 1680320), (15, 1344256), (16, 1260240), (20, 1008192), (24, 840160), (30, 672128), (32, 630120), (40, 504096), (48, 420080), (59, 341760), (60, 336064), (64, 315060), (80, 252048), (89, 226560), (96, 210040), (118, 170880), (120, 168032), (128, 157530), (160, 126024), (177, 113920), (178, 113280), (192, 105020), (236, 85440), (240, 84016), (256, 78765), (267, 75520), (295, 68352), (320, 63012), (354, 56960), (356, 56640), (384, 52510), (445, 45312), (472, 42720), (480, 42008), (534, 37760), (590, 34176), (640, 31506), (708, 28480), (712, 28320), (768, 26255), (885, 22784), (890, 22656), (944, 21360), (960, 21004), (1068, 18880), (1180, 17088), (1280, 15753), (1335, 15104), (1416, 14240), (1424, 14160), (1770, 11392), (1780, 11328), (1888, 10680), (1920, 10502), (2136, 9440), (2360, 8544), (2670, 7552), (2832, 7120), (2848, 7080), (3540, 5696), (3560, 5664), (3776, 5340), (3840, 5251), (4272, 4720)]