28891720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{5051}}^1$

素因数の和:5086

約数の個数: 64

約数和(自身を含む): 76386240

約数和(自身を除く): 47494520

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 26, 40, 44, 52, 55, 65, 88, 104, 110, 130, 143, 220, 260, 286, 440, 520, 572, 715, 1144, 1430, 2860, 5051, 5720, 10102, 20204, 25255, 40408, 50510, 55561, 65663, 101020, 111122, 131326, 202040, 222244, 262652, 277805, 328315, 444488, 525304, 555610, 656630, 722293, 1111220, 1313260, 1444586, 2222440, 2626520, 2889172, 3611465, 5778344, 7222930, 14445860, 28891720]

約数ペア:

[(1, 28891720), (2, 14445860), (4, 7222930), (5, 5778344), (8, 3611465), (10, 2889172), (11, 2626520), (13, 2222440), (20, 1444586), (22, 1313260), (26, 1111220), (40, 722293), (44, 656630), (52, 555610), (55, 525304), (65, 444488), (88, 328315), (104, 277805), (110, 262652), (130, 222244), (143, 202040), (220, 131326), (260, 111122), (286, 101020), (440, 65663), (520, 55561), (572, 50510), (715, 40408), (1144, 25255), (1430, 20204), (2860, 10102), (5051, 5720)]