19904854120

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{433}}^1\times {\mathrm{1723}}^1$

素因数の和:2219

約数の個数: 128

約数和(自身を含む): 48484396800

約数和(自身を除く): 28579542680

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 29, 40, 46, 58, 92, 115, 116, 145, 184, 230, 232, 290, 433, 460, 580, 667, 866, 920, 1160, 1334, 1723, 1732, 2165, 2668, 3335, 3446, 3464, 4330, 5336, 6670, 6892, 8615, 8660, 9959, 12557, 13340, 13784, 17230, 17320, 19918, 25114, 26680, 34460, 39629, 39836, 49795, 49967, 50228, 62785, 68920, 79258, 79672, 99590, 99934, 100456, 125570, 158516, 198145, 199180, 199868, 249835, 251140, 288811, 317032, 396290, 398360, 399736, 499670, 502280, 577622, 746059, 792580, 999340, 1149241, 1155244, 1444055, 1492118, 1585160, 1998680, 2298482, 2310488, 2888110, 2984236, 3730295, 4596964, 5746205, 5776220, 5968472, 7460590, 9193928, 11492410, 11552440, 14921180, 17159357, 21635711, 22984820, 29842360, 34318714, 43271422, 45969640, 68637428, 85796785, 86542844, 108178555, 137274856, 171593570, 173085688, 216357110, 343187140, 432714220, 497621353, 686374280, 865428440, 995242706, 1990485412, 2488106765, 3980970824, 4976213530, 9952427060, 19904854120]

約数ペア:

[(1, 19904854120), (2, 9952427060), (4, 4976213530), (5, 3980970824), (8, 2488106765), (10, 1990485412), (20, 995242706), (23, 865428440), (29, 686374280), (40, 497621353), (46, 432714220), (58, 343187140), (92, 216357110), (115, 173085688), (116, 171593570), (145, 137274856), (184, 108178555), (230, 86542844), (232, 85796785), (290, 68637428), (433, 45969640), (460, 43271422), (580, 34318714), (667, 29842360), (866, 22984820), (920, 21635711), (1160, 17159357), (1334, 14921180), (1723, 11552440), (1732, 11492410), (2165, 9193928), (2668, 7460590), (3335, 5968472), (3446, 5776220), (3464, 5746205), (4330, 4596964), (5336, 3730295), (6670, 2984236), (6892, 2888110), (8615, 2310488), (8660, 2298482), (9959, 1998680), (12557, 1585160), (13340, 1492118), (13784, 1444055), (17230, 1155244), (17320, 1149241), (19918, 999340), (25114, 792580), (26680, 746059), (34460, 577622), (39629, 502280), (39836, 499670), (49795, 399736), (49967, 398360), (50228, 396290), (62785, 317032), (68920, 288811), (79258, 251140), (79672, 249835), (99590, 199868), (99934, 199180), (100456, 198145), (125570, 158516)]