21329685

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{101}}^1$

素因数の和:163

約数の個数: 72

約数和(自身を含む): 42437304

約数和(自身を除く): 21107619

約数列:

[1, 3, 5, 9, 13, 15, 19, 39, 45, 57, 65, 95, 101, 117, 171, 195, 247, 285, 303, 361, 505, 585, 741, 855, 909, 1083, 1235, 1313, 1515, 1805, 1919, 2223, 3249, 3705, 3939, 4545, 4693, 5415, 5757, 6565, 9595, 11115, 11817, 14079, 16245, 17271, 19695, 23465, 24947, 28785, 36461, 42237, 59085, 70395, 74841, 86355, 109383, 124735, 182305, 211185, 224523, 328149, 374205, 473993, 546915, 1122615, 1421979, 1640745, 2369965, 4265937, 7109895, 21329685]

約数ペア:

[(1, 21329685), (3, 7109895), (5, 4265937), (9, 2369965), (13, 1640745), (15, 1421979), (19, 1122615), (39, 546915), (45, 473993), (57, 374205), (65, 328149), (95, 224523), (101, 211185), (117, 182305), (171, 124735), (195, 109383), (247, 86355), (285, 74841), (303, 70395), (361, 59085), (505, 42237), (585, 36461), (741, 28785), (855, 24947), (909, 23465), (1083, 19695), (1235, 17271), (1313, 16245), (1515, 14079), (1805, 11817), (1919, 11115), (2223, 9595), (3249, 6565), (3705, 5757), (3939, 5415), (4545, 4693)]