400779904

素因数分解:

$2^7\times 7^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{307}}^1$

素因数の和:406

約数の個数: 128

約数和(自身を含む): 965099520

約数和(自身を除く): 564319616

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 32, 47, 56, 62, 64, 94, 112, 124, 128, 188, 217, 224, 248, 307, 329, 376, 434, 448, 496, 614, 658, 752, 868, 896, 992, 1228, 1316, 1457, 1504, 1736, 1984, 2149, 2456, 2632, 2914, 3008, 3472, 3968, 4298, 4912, 5264, 5828, 6016, 6944, 8596, 9517, 9824, 10199, 10528, 11656, 13888, 14429, 17192, 19034, 19648, 20398, 21056, 23312, 27776, 28858, 34384, 38068, 39296, 40796, 42112, 46624, 57716, 66619, 68768, 76136, 81592, 93248, 101003, 115432, 133238, 137536, 152272, 163184, 186496, 202006, 230864, 266476, 275072, 304544, 326368, 404012, 447299, 461728, 532952, 609088, 652736, 808024, 894598, 923456, 1065904, 1218176, 1305472, 1616048, 1789196, 1846912, 2131808, 3131093, 3232096, 3578392, 4263616, 6262186, 6464192, 7156784, 8527232, 12524372, 12928384, 14313568, 25048744, 28627136, 50097488, 57254272, 100194976, 200389952, 400779904]

約数ペア:

[(1, 400779904), (2, 200389952), (4, 100194976), (7, 57254272), (8, 50097488), (14, 28627136), (16, 25048744), (28, 14313568), (31, 12928384), (32, 12524372), (47, 8527232), (56, 7156784), (62, 6464192), (64, 6262186), (94, 4263616), (112, 3578392), (124, 3232096), (128, 3131093), (188, 2131808), (217, 1846912), (224, 1789196), (248, 1616048), (307, 1305472), (329, 1218176), (376, 1065904), (434, 923456), (448, 894598), (496, 808024), (614, 652736), (658, 609088), (752, 532952), (868, 461728), (896, 447299), (992, 404012), (1228, 326368), (1316, 304544), (1457, 275072), (1504, 266476), (1736, 230864), (1984, 202006), (2149, 186496), (2456, 163184), (2632, 152272), (2914, 137536), (3008, 133238), (3472, 115432), (3968, 101003), (4298, 93248), (4912, 81592), (5264, 76136), (5828, 68768), (6016, 66619), (6944, 57716), (8596, 46624), (9517, 42112), (9824, 40796), (10199, 39296), (10528, 38068), (11656, 34384), (13888, 28858), (14429, 27776), (17192, 23312), (19034, 21056), (19648, 20398)]