20421684

素因数分解:

$2^2\times 3^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{631}}^1$

素因数の和:701

約数の個数: 72

約数和(自身を含む): 55211520

約数和(自身を除く): 34789836

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 29, 31, 36, 58, 62, 87, 93, 116, 124, 174, 186, 261, 279, 348, 372, 522, 558, 631, 899, 1044, 1116, 1262, 1798, 1893, 2524, 2697, 3596, 3786, 5394, 5679, 7572, 8091, 10788, 11358, 16182, 18299, 19561, 22716, 32364, 36598, 39122, 54897, 58683, 73196, 78244, 109794, 117366, 164691, 176049, 219588, 234732, 329382, 352098, 567269, 658764, 704196, 1134538, 1701807, 2269076, 3403614, 5105421, 6807228, 10210842, 20421684]

約数ペア:

[(1, 20421684), (2, 10210842), (3, 6807228), (4, 5105421), (6, 3403614), (9, 2269076), (12, 1701807), (18, 1134538), (29, 704196), (31, 658764), (36, 567269), (58, 352098), (62, 329382), (87, 234732), (93, 219588), (116, 176049), (124, 164691), (174, 117366), (186, 109794), (261, 78244), (279, 73196), (348, 58683), (372, 54897), (522, 39122), (558, 36598), (631, 32364), (899, 22716), (1044, 19561), (1116, 18299), (1262, 16182), (1798, 11358), (1893, 10788), (2524, 8091), (2697, 7572), (3596, 5679), (3786, 5394)]