21315294

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^3$

素因数の和:72

約数の個数: 144

約数和(自身を含む): 63488880

約数和(自身を除く): 42173586

約数列:

[1, 2, 3, 6, 7, 9, 11, 13, 14, 18, 21, 22, 26, 33, 39, 42, 49, 63, 66, 77, 78, 91, 98, 99, 117, 126, 143, 147, 154, 169, 182, 198, 231, 234, 273, 286, 294, 338, 429, 441, 462, 507, 539, 546, 637, 693, 819, 858, 882, 1001, 1014, 1078, 1183, 1274, 1287, 1386, 1521, 1617, 1638, 1859, 1911, 2002, 2197, 2366, 2574, 3003, 3042, 3234, 3549, 3718, 3822, 4394, 4851, 5577, 5733, 6006, 6591, 7007, 7098, 8281, 9009, 9702, 10647, 11154, 11466, 13013, 13182, 14014, 15379, 16562, 16731, 18018, 19773, 21021, 21294, 24167, 24843, 26026, 30758, 33462, 39039, 39546, 42042, 46137, 48334, 49686, 63063, 72501, 74529, 78078, 91091, 92274, 107653, 117117, 126126, 138411, 145002, 149058, 169169, 182182, 215306, 217503, 234234, 273273, 276822, 322959, 338338, 435006, 507507, 546546, 645918, 819819, 968877, 1015014, 1184183, 1522521, 1639638, 1937754, 2368366, 3045042, 3552549, 7105098, 10657647, 21315294]

約数ペア:

[(1, 21315294), (2, 10657647), (3, 7105098), (6, 3552549), (7, 3045042), (9, 2368366), (11, 1937754), (13, 1639638), (14, 1522521), (18, 1184183), (21, 1015014), (22, 968877), (26, 819819), (33, 645918), (39, 546546), (42, 507507), (49, 435006), (63, 338338), (66, 322959), (77, 276822), (78, 273273), (91, 234234), (98, 217503), (99, 215306), (117, 182182), (126, 169169), (143, 149058), (147, 145002), (154, 138411), (169, 126126), (182, 117117), (198, 107653), (231, 92274), (234, 91091), (273, 78078), (286, 74529), (294, 72501), (338, 63063), (429, 49686), (441, 48334), (462, 46137), (507, 42042), (539, 39546), (546, 39039), (637, 33462), (693, 30758), (819, 26026), (858, 24843), (882, 24167), (1001, 21294), (1014, 21021), (1078, 19773), (1183, 18018), (1274, 16731), (1287, 16562), (1386, 15379), (1521, 14014), (1617, 13182), (1638, 13013), (1859, 11466), (1911, 11154), (2002, 10647), (2197, 9702), (2366, 9009), (2574, 8281), (3003, 7098), (3042, 7007), (3234, 6591), (3549, 6006), (3718, 5733), (3822, 5577), (4394, 4851)]