1990137215

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{179}}^1$

素因数の和:293

約数の個数: 96

約数和(自身を含む): 2978519040

約数和(自身を除く): 988381825

約数列:

[1, 5, 11, 17, 23, 47, 55, 85, 115, 121, 179, 187, 235, 253, 391, 517, 605, 799, 895, 935, 1081, 1265, 1955, 1969, 2057, 2585, 2783, 3043, 3995, 4117, 4301, 5405, 5687, 8413, 8789, 9845, 10285, 11891, 13915, 15215, 18377, 20585, 21505, 21659, 28435, 33473, 42065, 43945, 45287, 47311, 59455, 69989, 91885, 92543, 96679, 108295, 130801, 143021, 167365, 193499, 202147, 226435, 236555, 349945, 368203, 462715, 483395, 498157, 654005, 715105, 769879, 967495, 1010735, 1017973, 1573231, 1841015, 2128489, 2223617, 2490785, 3289483, 3849395, 5089865, 7866155, 8468669, 10642445, 11118085, 16447415, 17305541, 23413379, 36184313, 42343345, 86527705, 117066895, 180921565, 398027443, 1990137215]

約数ペア:

[(1, 1990137215), (5, 398027443), (11, 180921565), (17, 117066895), (23, 86527705), (47, 42343345), (55, 36184313), (85, 23413379), (115, 17305541), (121, 16447415), (179, 11118085), (187, 10642445), (235, 8468669), (253, 7866155), (391, 5089865), (517, 3849395), (605, 3289483), (799, 2490785), (895, 2223617), (935, 2128489), (1081, 1841015), (1265, 1573231), (1955, 1017973), (1969, 1010735), (2057, 967495), (2585, 769879), (2783, 715105), (3043, 654005), (3995, 498157), (4117, 483395), (4301, 462715), (5405, 368203), (5687, 349945), (8413, 236555), (8789, 226435), (9845, 202147), (10285, 193499), (11891, 167365), (13915, 143021), (15215, 130801), (18377, 108295), (20585, 96679), (21505, 92543), (21659, 91885), (28435, 69989), (33473, 59455), (42065, 47311), (43945, 45287)]