19999200

素因数分解:

$2^5\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{641}}^1$

素因数の和:677

約数の個数: 144

約数和(自身を含む): 70214256

約数和(自身を除く): 50215056

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 25, 26, 30, 32, 39, 40, 48, 50, 52, 60, 65, 75, 78, 80, 96, 100, 104, 120, 130, 150, 156, 160, 195, 200, 208, 240, 260, 300, 312, 325, 390, 400, 416, 480, 520, 600, 624, 641, 650, 780, 800, 975, 1040, 1200, 1248, 1282, 1300, 1560, 1923, 1950, 2080, 2400, 2564, 2600, 3120, 3205, 3846, 3900, 5128, 5200, 6240, 6410, 7692, 7800, 8333, 9615, 10256, 10400, 12820, 15384, 15600, 16025, 16666, 19230, 20512, 24999, 25640, 30768, 31200, 32050, 33332, 38460, 41665, 48075, 49998, 51280, 61536, 64100, 66664, 76920, 83330, 96150, 99996, 102560, 124995, 128200, 133328, 153840, 166660, 192300, 199992, 208325, 249990, 256400, 266656, 307680, 333320, 384600, 399984, 416650, 499980, 512800, 624975, 666640, 769200, 799968, 833300, 999960, 1249950, 1333280, 1538400, 1666600, 1999920, 2499900, 3333200, 3999840, 4999800, 6666400, 9999600, 19999200]

約数ペア:

[(1, 19999200), (2, 9999600), (3, 6666400), (4, 4999800), (5, 3999840), (6, 3333200), (8, 2499900), (10, 1999920), (12, 1666600), (13, 1538400), (15, 1333280), (16, 1249950), (20, 999960), (24, 833300), (25, 799968), (26, 769200), (30, 666640), (32, 624975), (39, 512800), (40, 499980), (48, 416650), (50, 399984), (52, 384600), (60, 333320), (65, 307680), (75, 266656), (78, 256400), (80, 249990), (96, 208325), (100, 199992), (104, 192300), (120, 166660), (130, 153840), (150, 133328), (156, 128200), (160, 124995), (195, 102560), (200, 99996), (208, 96150), (240, 83330), (260, 76920), (300, 66664), (312, 64100), (325, 61536), (390, 51280), (400, 49998), (416, 48075), (480, 41665), (520, 38460), (600, 33332), (624, 32050), (641, 31200), (650, 30768), (780, 25640), (800, 24999), (975, 20512), (1040, 19230), (1200, 16666), (1248, 16025), (1282, 15600), (1300, 15384), (1560, 12820), (1923, 10400), (1950, 10256), (2080, 9615), (2400, 8333), (2564, 7800), (2600, 7692), (3120, 6410), (3205, 6240), (3846, 5200), (3900, 5128)]