20499180

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{641}}^1$

素因数の和:707

約数の個数: 96

約数和(自身を含む): 63419328

約数和(自身を除く): 42920148

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 41, 52, 60, 65, 78, 82, 123, 130, 156, 164, 195, 205, 246, 260, 390, 410, 492, 533, 615, 641, 780, 820, 1066, 1230, 1282, 1599, 1923, 2132, 2460, 2564, 2665, 3198, 3205, 3846, 5330, 6396, 6410, 7692, 7995, 8333, 9615, 10660, 12820, 15990, 16666, 19230, 24999, 26281, 31980, 33332, 38460, 41665, 49998, 52562, 78843, 83330, 99996, 105124, 124995, 131405, 157686, 166660, 249990, 262810, 315372, 341653, 394215, 499980, 525620, 683306, 788430, 1024959, 1366612, 1576860, 1708265, 2049918, 3416530, 4099836, 5124795, 6833060, 10249590, 20499180]

約数ペア:

[(1, 20499180), (2, 10249590), (3, 6833060), (4, 5124795), (5, 4099836), (6, 3416530), (10, 2049918), (12, 1708265), (13, 1576860), (15, 1366612), (20, 1024959), (26, 788430), (30, 683306), (39, 525620), (41, 499980), (52, 394215), (60, 341653), (65, 315372), (78, 262810), (82, 249990), (123, 166660), (130, 157686), (156, 131405), (164, 124995), (195, 105124), (205, 99996), (246, 83330), (260, 78843), (390, 52562), (410, 49998), (492, 41665), (533, 38460), (615, 33332), (641, 31980), (780, 26281), (820, 24999), (1066, 19230), (1230, 16666), (1282, 15990), (1599, 12820), (1923, 10660), (2132, 9615), (2460, 8333), (2564, 7995), (2665, 7692), (3198, 6410), (3205, 6396), (3846, 5330)]