20089760

素因数分解:

$2^5\times 5^1\times {\mathrm{241}}^1\times {\mathrm{521}}^1$

素因数の和:777

約数の個数: 48

約数和(自身を含む): 47750472

約数和(自身を除く): 27660712

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 241, 482, 521, 964, 1042, 1205, 1928, 2084, 2410, 2605, 3856, 4168, 4820, 5210, 7712, 8336, 9640, 10420, 16672, 19280, 20840, 38560, 41680, 83360, 125561, 251122, 502244, 627805, 1004488, 1255610, 2008976, 2511220, 4017952, 5022440, 10044880, 20089760]

約数ペア:

[(1, 20089760), (2, 10044880), (4, 5022440), (5, 4017952), (8, 2511220), (10, 2008976), (16, 1255610), (20, 1004488), (32, 627805), (40, 502244), (80, 251122), (160, 125561), (241, 83360), (482, 41680), (521, 38560), (964, 20840), (1042, 19280), (1205, 16672), (1928, 10420), (2084, 9640), (2410, 8336), (2605, 7712), (3856, 5210), (4168, 4820)]