28705690

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{419}}^1$

素因数の和:487

約数の個数: 64

約数和(自身を含む): 60963840

約数和(自身を除く): 32258150

約数列:

[1, 2, 5, 10, 13, 17, 26, 31, 34, 62, 65, 85, 130, 155, 170, 221, 310, 403, 419, 442, 527, 806, 838, 1054, 1105, 2015, 2095, 2210, 2635, 4030, 4190, 5270, 5447, 6851, 7123, 10894, 12989, 13702, 14246, 25978, 27235, 34255, 35615, 54470, 64945, 68510, 71230, 92599, 129890, 168857, 185198, 220813, 337714, 441626, 462995, 844285, 925990, 1104065, 1688570, 2208130, 2870569, 5741138, 14352845, 28705690]

約数ペア:

[(1, 28705690), (2, 14352845), (5, 5741138), (10, 2870569), (13, 2208130), (17, 1688570), (26, 1104065), (31, 925990), (34, 844285), (62, 462995), (65, 441626), (85, 337714), (130, 220813), (155, 185198), (170, 168857), (221, 129890), (310, 92599), (403, 71230), (419, 68510), (442, 64945), (527, 54470), (806, 35615), (838, 34255), (1054, 27235), (1105, 25978), (2015, 14246), (2095, 13702), (2210, 12989), (2635, 10894), (4030, 7123), (4190, 6851), (5270, 5447)]