19980459864

素因数分解:

$2^3\times 3^4\times {\mathrm{439}}^1\times {\mathrm{70237}}^1$

素因数の和:70694

約数の個数: 80

約数和(自身を含む): 56092066800

約数和(自身を除く): 36111606936

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 81, 108, 162, 216, 324, 439, 648, 878, 1317, 1756, 2634, 3512, 3951, 5268, 7902, 10536, 11853, 15804, 23706, 31608, 35559, 47412, 70237, 71118, 94824, 140474, 142236, 210711, 280948, 284472, 421422, 561896, 632133, 842844, 1264266, 1685688, 1896399, 2528532, 3792798, 5057064, 5689197, 7585596, 11378394, 15171192, 22756788, 30834043, 45513576, 61668086, 92502129, 123336172, 185004258, 246672344, 277506387, 370008516, 555012774, 740017032, 832519161, 1110025548, 1665038322, 2220051096, 2497557483, 3330076644, 4995114966, 6660153288, 9990229932, 19980459864]

約数ペア:

[(1, 19980459864), (2, 9990229932), (3, 6660153288), (4, 4995114966), (6, 3330076644), (8, 2497557483), (9, 2220051096), (12, 1665038322), (18, 1110025548), (24, 832519161), (27, 740017032), (36, 555012774), (54, 370008516), (72, 277506387), (81, 246672344), (108, 185004258), (162, 123336172), (216, 92502129), (324, 61668086), (439, 45513576), (648, 30834043), (878, 22756788), (1317, 15171192), (1756, 11378394), (2634, 7585596), (3512, 5689197), (3951, 5057064), (5268, 3792798), (7902, 2528532), (10536, 1896399), (11853, 1685688), (15804, 1264266), (23706, 842844), (31608, 632133), (35559, 561896), (47412, 421422), (70237, 284472), (71118, 280948), (94824, 210711), (140474, 142236)]