42120220

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^2\times {\mathrm{67}}^1$

素因数の和:179

約数の個数: 72

約数和(自身を含む): 97315344

約数和(自身を除く): 55195124

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 43, 67, 68, 85, 86, 134, 170, 172, 215, 268, 335, 340, 430, 670, 731, 860, 1139, 1340, 1462, 1849, 2278, 2881, 2924, 3655, 3698, 4556, 5695, 5762, 7310, 7396, 9245, 11390, 11524, 14405, 14620, 18490, 22780, 28810, 31433, 36980, 48977, 57620, 62866, 97954, 123883, 125732, 157165, 195908, 244885, 247766, 314330, 489770, 495532, 619415, 628660, 979540, 1238830, 2106011, 2477660, 4212022, 8424044, 10530055, 21060110, 42120220]

約数ペア:

[(1, 42120220), (2, 21060110), (4, 10530055), (5, 8424044), (10, 4212022), (17, 2477660), (20, 2106011), (34, 1238830), (43, 979540), (67, 628660), (68, 619415), (85, 495532), (86, 489770), (134, 314330), (170, 247766), (172, 244885), (215, 195908), (268, 157165), (335, 125732), (340, 123883), (430, 97954), (670, 62866), (731, 57620), (860, 48977), (1139, 36980), (1340, 31433), (1462, 28810), (1849, 22780), (2278, 18490), (2881, 14620), (2924, 14405), (3655, 11524), (3698, 11390), (4556, 9245), (5695, 7396), (5762, 7310)]