87781540

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{479}}^1$

素因数の和:530

約数の個数: 144

約数和(自身を含む): 248209920

約数和(自身を除く): 160428380

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 17, 20, 22, 28, 34, 35, 44, 49, 55, 68, 70, 77, 85, 98, 110, 119, 140, 154, 170, 187, 196, 220, 238, 245, 308, 340, 374, 385, 476, 479, 490, 539, 595, 748, 770, 833, 935, 958, 980, 1078, 1190, 1309, 1540, 1666, 1870, 1916, 2156, 2380, 2395, 2618, 2695, 3332, 3353, 3740, 4165, 4790, 5236, 5269, 5390, 6545, 6706, 8143, 8330, 9163, 9580, 10538, 10780, 13090, 13412, 16286, 16660, 16765, 18326, 21076, 23471, 26180, 26345, 32572, 33530, 36652, 36883, 40715, 45815, 46942, 52690, 57001, 67060, 73766, 81430, 89573, 91630, 93884, 105380, 114002, 117355, 147532, 162860, 179146, 183260, 184415, 228004, 234710, 258181, 285005, 358292, 368830, 399007, 447865, 469420, 516362, 570010, 627011, 737660, 798014, 895730, 1032724, 1140020, 1254022, 1290905, 1596028, 1791460, 1995035, 2508044, 2581810, 3135055, 3990070, 4389077, 5163620, 6270110, 7980140, 8778154, 12540220, 17556308, 21945385, 43890770, 87781540]

約数ペア:

[(1, 87781540), (2, 43890770), (4, 21945385), (5, 17556308), (7, 12540220), (10, 8778154), (11, 7980140), (14, 6270110), (17, 5163620), (20, 4389077), (22, 3990070), (28, 3135055), (34, 2581810), (35, 2508044), (44, 1995035), (49, 1791460), (55, 1596028), (68, 1290905), (70, 1254022), (77, 1140020), (85, 1032724), (98, 895730), (110, 798014), (119, 737660), (140, 627011), (154, 570010), (170, 516362), (187, 469420), (196, 447865), (220, 399007), (238, 368830), (245, 358292), (308, 285005), (340, 258181), (374, 234710), (385, 228004), (476, 184415), (479, 183260), (490, 179146), (539, 162860), (595, 147532), (748, 117355), (770, 114002), (833, 105380), (935, 93884), (958, 91630), (980, 89573), (1078, 81430), (1190, 73766), (1309, 67060), (1540, 57001), (1666, 52690), (1870, 46942), (1916, 45815), (2156, 40715), (2380, 36883), (2395, 36652), (2618, 33530), (2695, 32572), (3332, 26345), (3353, 26180), (3740, 23471), (4165, 21076), (4790, 18326), (5236, 16765), (5269, 16660), (5390, 16286), (6545, 13412), (6706, 13090), (8143, 10780), (8330, 10538), (9163, 9580)]