20901934720

素因数分解:

$2^7\times 5^1\times {\mathrm{59}}^1\times {\mathrm{389}}^1\times {\mathrm{1423}}^1$

素因数の和:1890

約数の個数: 128

約数和(自身を含む): 50982048000

約数和(自身を除く): 30080113280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 59, 64, 80, 118, 128, 160, 236, 295, 320, 389, 472, 590, 640, 778, 944, 1180, 1423, 1556, 1888, 1945, 2360, 2846, 3112, 3776, 3890, 4720, 5692, 6224, 7115, 7552, 7780, 9440, 11384, 12448, 14230, 15560, 18880, 22768, 22951, 24896, 28460, 31120, 37760, 45536, 45902, 49792, 56920, 62240, 83957, 91072, 91804, 113840, 114755, 124480, 167914, 182144, 183608, 227680, 229510, 248960, 335828, 367216, 419785, 455360, 459020, 553547, 671656, 734432, 839570, 910720, 918040, 1107094, 1343312, 1468864, 1679140, 1836080, 2214188, 2686624, 2767735, 2937728, 3358280, 3672160, 4428376, 5373248, 5535470, 6716560, 7344320, 8856752, 10746496, 11070940, 13433120, 14688640, 17713504, 22141880, 26866240, 32659273, 35427008, 44283760, 53732480, 65318546, 70854016, 88567520, 130637092, 163296365, 177135040, 261274184, 326592730, 354270080, 522548368, 653185460, 1045096736, 1306370920, 2090193472, 2612741840, 4180386944, 5225483680, 10450967360, 20901934720]

約数ペア:

[(1, 20901934720), (2, 10450967360), (4, 5225483680), (5, 4180386944), (8, 2612741840), (10, 2090193472), (16, 1306370920), (20, 1045096736), (32, 653185460), (40, 522548368), (59, 354270080), (64, 326592730), (80, 261274184), (118, 177135040), (128, 163296365), (160, 130637092), (236, 88567520), (295, 70854016), (320, 65318546), (389, 53732480), (472, 44283760), (590, 35427008), (640, 32659273), (778, 26866240), (944, 22141880), (1180, 17713504), (1423, 14688640), (1556, 13433120), (1888, 11070940), (1945, 10746496), (2360, 8856752), (2846, 7344320), (3112, 6716560), (3776, 5535470), (3890, 5373248), (4720, 4428376), (5692, 3672160), (6224, 3358280), (7115, 2937728), (7552, 2767735), (7780, 2686624), (9440, 2214188), (11384, 1836080), (12448, 1679140), (14230, 1468864), (15560, 1343312), (18880, 1107094), (22768, 918040), (22951, 910720), (24896, 839570), (28460, 734432), (31120, 671656), (37760, 553547), (45536, 459020), (45902, 455360), (49792, 419785), (56920, 367216), (62240, 335828), (83957, 248960), (91072, 229510), (91804, 227680), (113840, 183608), (114755, 182144), (124480, 167914)]