21960120

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2011}}^1$

素因数の和:2045

約数の個数: 128

約数和(自身を含む): 81123840

約数和(自身を除く): 59163720

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, 2011, 2184, 2730, 3640, 4022, 5460, 6033, 8044, 10055, 10920, 12066, 14077, 16088, 20110, 24132, 26143, 28154, 30165, 40220, 42231, 48264, 52286, 56308, 60330, 70385, 78429, 80440, 84462, 104572, 112616, 120660, 130715, 140770, 156858, 168924, 183001, 209144, 211155, 241320, 261430, 281540, 313716, 337848, 366002, 392145, 422310, 522860, 549003, 563080, 627432, 732004, 784290, 844620, 915005, 1045720, 1098006, 1464008, 1568580, 1689240, 1830010, 2196012, 2745015, 3137160, 3660020, 4392024, 5490030, 7320040, 10980060, 21960120]

約数ペア:

[(1, 21960120), (2, 10980060), (3, 7320040), (4, 5490030), (5, 4392024), (6, 3660020), (7, 3137160), (8, 2745015), (10, 2196012), (12, 1830010), (13, 1689240), (14, 1568580), (15, 1464008), (20, 1098006), (21, 1045720), (24, 915005), (26, 844620), (28, 784290), (30, 732004), (35, 627432), (39, 563080), (40, 549003), (42, 522860), (52, 422310), (56, 392145), (60, 366002), (65, 337848), (70, 313716), (78, 281540), (84, 261430), (91, 241320), (104, 211155), (105, 209144), (120, 183001), (130, 168924), (140, 156858), (156, 140770), (168, 130715), (182, 120660), (195, 112616), (210, 104572), (260, 84462), (273, 80440), (280, 78429), (312, 70385), (364, 60330), (390, 56308), (420, 52286), (455, 48264), (520, 42231), (546, 40220), (728, 30165), (780, 28154), (840, 26143), (910, 24132), (1092, 20110), (1365, 16088), (1560, 14077), (1820, 12066), (2011, 10920), (2184, 10055), (2730, 8044), (3640, 6033), (4022, 5460)]