19992827985

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{257}}^1\times {\mathrm{757}}^1$

素因数の和:1083

約数の個数: 128

約数和(自身を含む): 37848674304

約数和(自身を除く): 17855846319

約数列:

[1, 3, 5, 13, 15, 17, 31, 39, 51, 65, 85, 93, 155, 195, 221, 255, 257, 403, 465, 527, 663, 757, 771, 1105, 1209, 1285, 1581, 2015, 2271, 2635, 3315, 3341, 3785, 3855, 4369, 6045, 6851, 7905, 7967, 9841, 10023, 11355, 12869, 13107, 16705, 20553, 21845, 23467, 23901, 29523, 34255, 38607, 39835, 49205, 50115, 56797, 64345, 65535, 70401, 102765, 103571, 117335, 119505, 135439, 147615, 167297, 170391, 193035, 194549, 283985, 305071, 310713, 352005, 398939, 406317, 501891, 517855, 583647, 677195, 836485, 851955, 915213, 972745, 1196817, 1525355, 1553565, 1760707, 1994695, 2031585, 2509455, 2529137, 2918235, 3307333, 4576065, 5186207, 5282121, 5984085, 6031019, 7587411, 8803535, 9921999, 12645685, 15558621, 16536665, 18093057, 25931035, 26410605, 30155095, 37937055, 42995329, 49609995, 77793105, 78403247, 90465285, 102527323, 128985987, 214976645, 235209741, 307581969, 392016235, 512636615, 644929935, 1176048705, 1332855199, 1537909845, 3998565597, 6664275995, 19992827985]

約数ペア:

[(1, 19992827985), (3, 6664275995), (5, 3998565597), (13, 1537909845), (15, 1332855199), (17, 1176048705), (31, 644929935), (39, 512636615), (51, 392016235), (65, 307581969), (85, 235209741), (93, 214976645), (155, 128985987), (195, 102527323), (221, 90465285), (255, 78403247), (257, 77793105), (403, 49609995), (465, 42995329), (527, 37937055), (663, 30155095), (757, 26410605), (771, 25931035), (1105, 18093057), (1209, 16536665), (1285, 15558621), (1581, 12645685), (2015, 9921999), (2271, 8803535), (2635, 7587411), (3315, 6031019), (3341, 5984085), (3785, 5282121), (3855, 5186207), (4369, 4576065), (6045, 3307333), (6851, 2918235), (7905, 2529137), (7967, 2509455), (9841, 2031585), (10023, 1994695), (11355, 1760707), (12869, 1553565), (13107, 1525355), (16705, 1196817), (20553, 972745), (21845, 915213), (23467, 851955), (23901, 836485), (29523, 677195), (34255, 583647), (38607, 517855), (39835, 501891), (49205, 406317), (50115, 398939), (56797, 352005), (64345, 310713), (65535, 305071), (70401, 283985), (102765, 194549), (103571, 193035), (117335, 170391), (119505, 167297), (135439, 147615)]