320423480

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{541}}^1$

素因数の和:649

約数の個数: 128

約数和(自身を含む): 835894080

約数和(自身を除く): 515470600

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 26, 34, 40, 52, 65, 67, 68, 85, 104, 130, 134, 136, 170, 221, 260, 268, 335, 340, 442, 520, 536, 541, 670, 680, 871, 884, 1082, 1105, 1139, 1340, 1742, 1768, 2164, 2210, 2278, 2680, 2705, 3484, 4328, 4355, 4420, 4556, 5410, 5695, 6968, 7033, 8710, 8840, 9112, 9197, 10820, 11390, 14066, 14807, 17420, 18394, 21640, 22780, 28132, 29614, 34840, 35165, 36247, 36788, 45560, 45985, 56264, 59228, 70330, 72494, 73576, 74035, 91970, 118456, 119561, 140660, 144988, 148070, 181235, 183940, 239122, 281320, 289976, 296140, 362470, 367880, 471211, 478244, 592280, 597805, 616199, 724940, 942422, 956488, 1195610, 1232398, 1449880, 1884844, 2356055, 2391220, 2464796, 3080995, 3769688, 4712110, 4782440, 4929592, 6161990, 8010587, 9424220, 12323980, 16021174, 18848440, 24647960, 32042348, 40052935, 64084696, 80105870, 160211740, 320423480]

約数ペア:

[(1, 320423480), (2, 160211740), (4, 80105870), (5, 64084696), (8, 40052935), (10, 32042348), (13, 24647960), (17, 18848440), (20, 16021174), (26, 12323980), (34, 9424220), (40, 8010587), (52, 6161990), (65, 4929592), (67, 4782440), (68, 4712110), (85, 3769688), (104, 3080995), (130, 2464796), (134, 2391220), (136, 2356055), (170, 1884844), (221, 1449880), (260, 1232398), (268, 1195610), (335, 956488), (340, 942422), (442, 724940), (520, 616199), (536, 597805), (541, 592280), (670, 478244), (680, 471211), (871, 367880), (884, 362470), (1082, 296140), (1105, 289976), (1139, 281320), (1340, 239122), (1742, 183940), (1768, 181235), (2164, 148070), (2210, 144988), (2278, 140660), (2680, 119561), (2705, 118456), (3484, 91970), (4328, 74035), (4355, 73576), (4420, 72494), (4556, 70330), (5410, 59228), (5695, 56264), (6968, 45985), (7033, 45560), (8710, 36788), (8840, 36247), (9112, 35165), (9197, 34840), (10820, 29614), (11390, 28132), (14066, 22780), (14807, 21640), (17420, 18394)]