21039876

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1$

素因数の和:162

約数の個数: 144

約数和(自身を含む): 64454208

約数和(自身を除く): 43414332

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 13, 18, 22, 26, 33, 36, 39, 44, 52, 61, 66, 67, 78, 99, 117, 122, 132, 134, 143, 156, 183, 198, 201, 234, 244, 268, 286, 366, 396, 402, 429, 468, 549, 572, 603, 671, 732, 737, 793, 804, 858, 871, 1098, 1206, 1287, 1342, 1474, 1586, 1716, 1742, 2013, 2196, 2211, 2379, 2412, 2574, 2613, 2684, 2948, 3172, 3484, 4026, 4087, 4422, 4758, 5148, 5226, 6039, 6633, 7137, 7839, 8052, 8174, 8723, 8844, 9516, 9581, 10452, 12078, 12261, 13266, 14274, 15678, 16348, 17446, 19162, 24156, 24522, 26169, 26532, 28548, 28743, 31356, 34892, 36783, 38324, 44957, 49044, 52338, 53131, 57486, 73566, 78507, 86229, 89914, 104676, 106262, 114972, 134871, 147132, 157014, 159393, 172458, 179828, 212524, 269742, 314028, 318786, 344916, 404613, 478179, 539484, 584441, 637572, 809226, 956358, 1168882, 1618452, 1753323, 1912716, 2337764, 3506646, 5259969, 7013292, 10519938, 21039876]

約数ペア:

[(1, 21039876), (2, 10519938), (3, 7013292), (4, 5259969), (6, 3506646), (9, 2337764), (11, 1912716), (12, 1753323), (13, 1618452), (18, 1168882), (22, 956358), (26, 809226), (33, 637572), (36, 584441), (39, 539484), (44, 478179), (52, 404613), (61, 344916), (66, 318786), (67, 314028), (78, 269742), (99, 212524), (117, 179828), (122, 172458), (132, 159393), (134, 157014), (143, 147132), (156, 134871), (183, 114972), (198, 106262), (201, 104676), (234, 89914), (244, 86229), (268, 78507), (286, 73566), (366, 57486), (396, 53131), (402, 52338), (429, 49044), (468, 44957), (549, 38324), (572, 36783), (603, 34892), (671, 31356), (732, 28743), (737, 28548), (793, 26532), (804, 26169), (858, 24522), (871, 24156), (1098, 19162), (1206, 17446), (1287, 16348), (1342, 15678), (1474, 14274), (1586, 13266), (1716, 12261), (1742, 12078), (2013, 10452), (2196, 9581), (2211, 9516), (2379, 8844), (2412, 8723), (2574, 8174), (2613, 8052), (2684, 7839), (2948, 7137), (3172, 6633), (3484, 6039), (4026, 5226), (4087, 5148), (4422, 4758)]