20619960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{241}}^1$

素因数の和:309

約数の個数: 128

約数和(自身を含む): 66908160

約数和(自身を除く): 46288200

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 23, 24, 30, 31, 40, 46, 60, 62, 69, 92, 93, 115, 120, 124, 138, 155, 184, 186, 230, 241, 248, 276, 310, 345, 372, 460, 465, 482, 552, 620, 690, 713, 723, 744, 920, 930, 964, 1205, 1240, 1380, 1426, 1446, 1860, 1928, 2139, 2410, 2760, 2852, 2892, 3565, 3615, 3720, 4278, 4820, 5543, 5704, 5784, 7130, 7230, 7471, 8556, 9640, 10695, 11086, 14260, 14460, 14942, 16629, 17112, 21390, 22172, 22413, 27715, 28520, 28920, 29884, 33258, 37355, 42780, 44344, 44826, 55430, 59768, 66516, 74710, 83145, 85560, 89652, 110860, 112065, 133032, 149420, 166290, 171833, 179304, 221720, 224130, 298840, 332580, 343666, 448260, 515499, 665160, 687332, 859165, 896520, 1030998, 1374664, 1718330, 2061996, 2577495, 3436660, 4123992, 5154990, 6873320, 10309980, 20619960]

約数ペア:

[(1, 20619960), (2, 10309980), (3, 6873320), (4, 5154990), (5, 4123992), (6, 3436660), (8, 2577495), (10, 2061996), (12, 1718330), (15, 1374664), (20, 1030998), (23, 896520), (24, 859165), (30, 687332), (31, 665160), (40, 515499), (46, 448260), (60, 343666), (62, 332580), (69, 298840), (92, 224130), (93, 221720), (115, 179304), (120, 171833), (124, 166290), (138, 149420), (155, 133032), (184, 112065), (186, 110860), (230, 89652), (241, 85560), (248, 83145), (276, 74710), (310, 66516), (345, 59768), (372, 55430), (460, 44826), (465, 44344), (482, 42780), (552, 37355), (620, 33258), (690, 29884), (713, 28920), (723, 28520), (744, 27715), (920, 22413), (930, 22172), (964, 21390), (1205, 17112), (1240, 16629), (1380, 14942), (1426, 14460), (1446, 14260), (1860, 11086), (1928, 10695), (2139, 9640), (2410, 8556), (2760, 7471), (2852, 7230), (2892, 7130), (3565, 5784), (3615, 5704), (3720, 5543), (4278, 4820)]