1780989820

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{269}}^1\times {\mathrm{389}}^1$

素因数の和:727

約数の個数: 96

約数和(自身を含む): 4033411200

約数和(自身を除く): 2252421380

約数列:

[1, 2, 4, 5, 10, 20, 23, 37, 46, 74, 92, 115, 148, 185, 230, 269, 370, 389, 460, 538, 740, 778, 851, 1076, 1345, 1556, 1702, 1945, 2690, 3404, 3890, 4255, 5380, 6187, 7780, 8510, 8947, 9953, 12374, 14393, 17020, 17894, 19906, 24748, 28786, 30935, 35788, 39812, 44735, 49765, 57572, 61870, 71965, 89470, 99530, 104641, 123740, 143930, 178940, 199060, 209282, 228919, 287860, 331039, 418564, 457838, 523205, 662078, 915676, 1046410, 1144595, 1324156, 1655195, 2092820, 2289190, 2406743, 3310390, 3871717, 4578380, 4813486, 6620780, 7743434, 9626972, 12033715, 15486868, 19358585, 24067430, 38717170, 48134860, 77434340, 89049491, 178098982, 356197964, 445247455, 890494910, 1780989820]

約数ペア:

[(1, 1780989820), (2, 890494910), (4, 445247455), (5, 356197964), (10, 178098982), (20, 89049491), (23, 77434340), (37, 48134860), (46, 38717170), (74, 24067430), (92, 19358585), (115, 15486868), (148, 12033715), (185, 9626972), (230, 7743434), (269, 6620780), (370, 4813486), (389, 4578380), (460, 3871717), (538, 3310390), (740, 2406743), (778, 2289190), (851, 2092820), (1076, 1655195), (1345, 1324156), (1556, 1144595), (1702, 1046410), (1945, 915676), (2690, 662078), (3404, 523205), (3890, 457838), (4255, 418564), (5380, 331039), (6187, 287860), (7780, 228919), (8510, 209282), (8947, 199060), (9953, 178940), (12374, 143930), (14393, 123740), (17020, 104641), (17894, 99530), (19906, 89470), (24748, 71965), (28786, 61870), (30935, 57572), (35788, 49765), (39812, 44735)]