291720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1$

素因数の和:55

約数の個数: 128

約数和(自身を含む): 1088640

約数和(自身を除く): 796920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 13, 15, 17, 20, 22, 24, 26, 30, 33, 34, 39, 40, 44, 51, 52, 55, 60, 65, 66, 68, 78, 85, 88, 102, 104, 110, 120, 130, 132, 136, 143, 156, 165, 170, 187, 195, 204, 220, 221, 255, 260, 264, 286, 312, 330, 340, 374, 390, 408, 429, 440, 442, 510, 520, 561, 572, 660, 663, 680, 715, 748, 780, 858, 884, 935, 1020, 1105, 1122, 1144, 1320, 1326, 1430, 1496, 1560, 1716, 1768, 1870, 2040, 2145, 2210, 2244, 2431, 2652, 2805, 2860, 3315, 3432, 3740, 4290, 4420, 4488, 4862, 5304, 5610, 5720, 6630, 7293, 7480, 8580, 8840, 9724, 11220, 12155, 13260, 14586, 17160, 19448, 22440, 24310, 26520, 29172, 36465, 48620, 58344, 72930, 97240, 145860, 291720]

約数ペア:

[(1, 291720), (2, 145860), (3, 97240), (4, 72930), (5, 58344), (6, 48620), (8, 36465), (10, 29172), (11, 26520), (12, 24310), (13, 22440), (15, 19448), (17, 17160), (20, 14586), (22, 13260), (24, 12155), (26, 11220), (30, 9724), (33, 8840), (34, 8580), (39, 7480), (40, 7293), (44, 6630), (51, 5720), (52, 5610), (55, 5304), (60, 4862), (65, 4488), (66, 4420), (68, 4290), (78, 3740), (85, 3432), (88, 3315), (102, 2860), (104, 2805), (110, 2652), (120, 2431), (130, 2244), (132, 2210), (136, 2145), (143, 2040), (156, 1870), (165, 1768), (170, 1716), (187, 1560), (195, 1496), (204, 1430), (220, 1326), (221, 1320), (255, 1144), (260, 1122), (264, 1105), (286, 1020), (312, 935), (330, 884), (340, 858), (374, 780), (390, 748), (408, 715), (429, 680), (440, 663), (442, 660), (510, 572), (520, 561)]