21454888280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{359}}^1\times {\mathrm{3499}}^1$

素因数の和:3937

約数の個数: 128

約数和(自身を含む): 56246400000

約数和(自身を除く): 34791511720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 61, 70, 122, 140, 244, 280, 305, 359, 427, 488, 610, 718, 854, 1220, 1436, 1708, 1795, 2135, 2440, 2513, 2872, 3416, 3499, 3590, 4270, 5026, 6998, 7180, 8540, 10052, 12565, 13996, 14360, 17080, 17495, 20104, 21899, 24493, 25130, 27992, 34990, 43798, 48986, 50260, 69980, 87596, 97972, 100520, 109495, 122465, 139960, 153293, 175192, 195944, 213439, 218990, 244930, 306586, 426878, 437980, 489860, 613172, 766465, 853756, 875960, 979720, 1067195, 1226344, 1256141, 1494073, 1532930, 1707512, 2134390, 2512282, 2988146, 3065860, 4268780, 5024564, 5976292, 6131720, 6280705, 7470365, 8537560, 8792987, 10049128, 11952584, 12561410, 14940730, 17585974, 25122820, 29881460, 35171948, 43964935, 50245640, 59762920, 70343896, 76624601, 87929870, 153249202, 175859740, 306498404, 351719480, 383123005, 536372207, 612996808, 766246010, 1072744414, 1532492020, 2145488828, 2681861035, 3064984040, 4290977656, 5363722070, 10727444140, 21454888280]

約数ペア:

[(1, 21454888280), (2, 10727444140), (4, 5363722070), (5, 4290977656), (7, 3064984040), (8, 2681861035), (10, 2145488828), (14, 1532492020), (20, 1072744414), (28, 766246010), (35, 612996808), (40, 536372207), (56, 383123005), (61, 351719480), (70, 306498404), (122, 175859740), (140, 153249202), (244, 87929870), (280, 76624601), (305, 70343896), (359, 59762920), (427, 50245640), (488, 43964935), (610, 35171948), (718, 29881460), (854, 25122820), (1220, 17585974), (1436, 14940730), (1708, 12561410), (1795, 11952584), (2135, 10049128), (2440, 8792987), (2513, 8537560), (2872, 7470365), (3416, 6280705), (3499, 6131720), (3590, 5976292), (4270, 5024564), (5026, 4268780), (6998, 3065860), (7180, 2988146), (8540, 2512282), (10052, 2134390), (12565, 1707512), (13996, 1532930), (14360, 1494073), (17080, 1256141), (17495, 1226344), (20104, 1067195), (21899, 979720), (24493, 875960), (25130, 853756), (27992, 766465), (34990, 613172), (43798, 489860), (48986, 437980), (50260, 426878), (69980, 306586), (87596, 244930), (97972, 218990), (100520, 213439), (109495, 195944), (122465, 175192), (139960, 153293)]