21499764

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1$

素因数の和:126

約数の個数: 144

約数和(自身を含む): 63814464

約数和(自身を除く): 42314700

約数列:

[1, 2, 3, 4, 6, 11, 12, 13, 17, 22, 26, 33, 34, 39, 44, 51, 52, 66, 67, 68, 78, 102, 121, 132, 134, 143, 156, 187, 201, 204, 221, 242, 268, 286, 363, 374, 402, 429, 442, 484, 561, 572, 663, 726, 737, 748, 804, 858, 871, 884, 1122, 1139, 1326, 1452, 1474, 1573, 1716, 1742, 2057, 2211, 2244, 2278, 2431, 2613, 2652, 2948, 3146, 3417, 3484, 4114, 4422, 4556, 4719, 4862, 5226, 6171, 6292, 6834, 7293, 8107, 8228, 8844, 9438, 9581, 9724, 10452, 12342, 12529, 13668, 14586, 14807, 16214, 18876, 19162, 24321, 24684, 25058, 26741, 28743, 29172, 29614, 32428, 37587, 38324, 44421, 48642, 50116, 53482, 57486, 59228, 75174, 80223, 88842, 97284, 105391, 106964, 114972, 137819, 150348, 160446, 162877, 177684, 210782, 275638, 316173, 320892, 325754, 413457, 421564, 488631, 551276, 632346, 651508, 826914, 977262, 1264692, 1653828, 1791647, 1954524, 3583294, 5374941, 7166588, 10749882, 21499764]

約数ペア:

[(1, 21499764), (2, 10749882), (3, 7166588), (4, 5374941), (6, 3583294), (11, 1954524), (12, 1791647), (13, 1653828), (17, 1264692), (22, 977262), (26, 826914), (33, 651508), (34, 632346), (39, 551276), (44, 488631), (51, 421564), (52, 413457), (66, 325754), (67, 320892), (68, 316173), (78, 275638), (102, 210782), (121, 177684), (132, 162877), (134, 160446), (143, 150348), (156, 137819), (187, 114972), (201, 106964), (204, 105391), (221, 97284), (242, 88842), (268, 80223), (286, 75174), (363, 59228), (374, 57486), (402, 53482), (429, 50116), (442, 48642), (484, 44421), (561, 38324), (572, 37587), (663, 32428), (726, 29614), (737, 29172), (748, 28743), (804, 26741), (858, 25058), (871, 24684), (884, 24321), (1122, 19162), (1139, 18876), (1326, 16214), (1452, 14807), (1474, 14586), (1573, 13668), (1716, 12529), (1742, 12342), (2057, 10452), (2211, 9724), (2244, 9581), (2278, 9438), (2431, 8844), (2613, 8228), (2652, 8107), (2948, 7293), (3146, 6834), (3417, 6292), (3484, 6171), (4114, 5226), (4422, 4862), (4556, 4719)]