20431320

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1871}}^1$

素因数の和:1905

約数の個数: 128

約数和(自身を含む): 75479040

約数和(自身を除く): 55047720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 52, 56, 60, 65, 70, 78, 84, 91, 104, 105, 120, 130, 140, 156, 168, 182, 195, 210, 260, 273, 280, 312, 364, 390, 420, 455, 520, 546, 728, 780, 840, 910, 1092, 1365, 1560, 1820, 1871, 2184, 2730, 3640, 3742, 5460, 5613, 7484, 9355, 10920, 11226, 13097, 14968, 18710, 22452, 24323, 26194, 28065, 37420, 39291, 44904, 48646, 52388, 56130, 65485, 72969, 74840, 78582, 97292, 104776, 112260, 121615, 130970, 145938, 157164, 170261, 194584, 196455, 224520, 243230, 261940, 291876, 314328, 340522, 364845, 392910, 486460, 510783, 523880, 583752, 681044, 729690, 785820, 851305, 972920, 1021566, 1362088, 1459380, 1571640, 1702610, 2043132, 2553915, 2918760, 3405220, 4086264, 5107830, 6810440, 10215660, 20431320]

約数ペア:

[(1, 20431320), (2, 10215660), (3, 6810440), (4, 5107830), (5, 4086264), (6, 3405220), (7, 2918760), (8, 2553915), (10, 2043132), (12, 1702610), (13, 1571640), (14, 1459380), (15, 1362088), (20, 1021566), (21, 972920), (24, 851305), (26, 785820), (28, 729690), (30, 681044), (35, 583752), (39, 523880), (40, 510783), (42, 486460), (52, 392910), (56, 364845), (60, 340522), (65, 314328), (70, 291876), (78, 261940), (84, 243230), (91, 224520), (104, 196455), (105, 194584), (120, 170261), (130, 157164), (140, 145938), (156, 130970), (168, 121615), (182, 112260), (195, 104776), (210, 97292), (260, 78582), (273, 74840), (280, 72969), (312, 65485), (364, 56130), (390, 52388), (420, 48646), (455, 44904), (520, 39291), (546, 37420), (728, 28065), (780, 26194), (840, 24323), (910, 22452), (1092, 18710), (1365, 14968), (1560, 13097), (1820, 11226), (1871, 10920), (2184, 9355), (2730, 7484), (3640, 5613), (3742, 5460)]