78223120

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{509}}^1$

素因数の和:652

約数の個数: 80

約数和(自身を含む): 194652720

約数和(自身を除く): 116429600

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 113, 136, 170, 226, 272, 340, 452, 509, 565, 680, 904, 1018, 1130, 1360, 1808, 1921, 2036, 2260, 2545, 3842, 4072, 4520, 5090, 7684, 8144, 8653, 9040, 9605, 10180, 15368, 17306, 19210, 20360, 30736, 34612, 38420, 40720, 43265, 57517, 69224, 76840, 86530, 115034, 138448, 153680, 173060, 230068, 287585, 346120, 460136, 575170, 692240, 920272, 977789, 1150340, 1955578, 2300680, 3911156, 4601360, 4888945, 7822312, 9777890, 15644624, 19555780, 39111560, 78223120]

約数ペア:

[(1, 78223120), (2, 39111560), (4, 19555780), (5, 15644624), (8, 9777890), (10, 7822312), (16, 4888945), (17, 4601360), (20, 3911156), (34, 2300680), (40, 1955578), (68, 1150340), (80, 977789), (85, 920272), (113, 692240), (136, 575170), (170, 460136), (226, 346120), (272, 287585), (340, 230068), (452, 173060), (509, 153680), (565, 138448), (680, 115034), (904, 86530), (1018, 76840), (1130, 69224), (1360, 57517), (1808, 43265), (1921, 40720), (2036, 38420), (2260, 34612), (2545, 30736), (3842, 20360), (4072, 19210), (4520, 17306), (5090, 15368), (7684, 10180), (8144, 9605), (8653, 9040)]