20645408

素因数分解:

$2^5\times 7^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1$

素因数の和:154

約数の個数: 96

約数和(自身を含む): 49641984

約数和(自身を除く): 28996576

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 37, 47, 53, 56, 74, 94, 106, 112, 148, 188, 212, 224, 259, 296, 329, 371, 376, 424, 518, 592, 658, 742, 752, 848, 1036, 1184, 1316, 1484, 1504, 1696, 1739, 1961, 2072, 2491, 2632, 2968, 3478, 3922, 4144, 4982, 5264, 5936, 6956, 7844, 8288, 9964, 10528, 11872, 12173, 13727, 13912, 15688, 17437, 19928, 24346, 27454, 27824, 31376, 34874, 39856, 48692, 54908, 55648, 62752, 69748, 79712, 92167, 97384, 109816, 139496, 184334, 194768, 219632, 278992, 368668, 389536, 439264, 557984, 645169, 737336, 1290338, 1474672, 2580676, 2949344, 5161352, 10322704, 20645408]

約数ペア:

[(1, 20645408), (2, 10322704), (4, 5161352), (7, 2949344), (8, 2580676), (14, 1474672), (16, 1290338), (28, 737336), (32, 645169), (37, 557984), (47, 439264), (53, 389536), (56, 368668), (74, 278992), (94, 219632), (106, 194768), (112, 184334), (148, 139496), (188, 109816), (212, 97384), (224, 92167), (259, 79712), (296, 69748), (329, 62752), (371, 55648), (376, 54908), (424, 48692), (518, 39856), (592, 34874), (658, 31376), (742, 27824), (752, 27454), (848, 24346), (1036, 19928), (1184, 17437), (1316, 15688), (1484, 13912), (1504, 13727), (1696, 12173), (1739, 11872), (1961, 10528), (2072, 9964), (2491, 8288), (2632, 7844), (2968, 6956), (3478, 5936), (3922, 5264), (4144, 4982)]