20576715

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1$

素因数の和:212

約数の個数: 64

約数和(自身を含む): 38154240

約数和(自身を除く): 17577525

約数列:

[1, 3, 5, 15, 17, 19, 31, 51, 57, 85, 93, 95, 137, 155, 255, 285, 323, 411, 465, 527, 589, 685, 969, 1581, 1615, 1767, 2055, 2329, 2603, 2635, 2945, 4247, 4845, 6987, 7809, 7905, 8835, 10013, 11645, 12741, 13015, 21235, 30039, 34935, 39045, 44251, 50065, 63705, 72199, 80693, 132753, 150195, 216597, 221255, 242079, 360995, 403465, 663765, 1082985, 1210395, 1371781, 4115343, 6858905, 20576715]

約数ペア:

[(1, 20576715), (3, 6858905), (5, 4115343), (15, 1371781), (17, 1210395), (19, 1082985), (31, 663765), (51, 403465), (57, 360995), (85, 242079), (93, 221255), (95, 216597), (137, 150195), (155, 132753), (255, 80693), (285, 72199), (323, 63705), (411, 50065), (465, 44251), (527, 39045), (589, 34935), (685, 30039), (969, 21235), (1581, 13015), (1615, 12741), (1767, 11645), (2055, 10013), (2329, 8835), (2603, 7905), (2635, 7809), (2945, 6987), (4247, 4845)]