81450400

素因数分解:

$2^5\times 5^2\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{113}}^1$

素因数の和:203

約数の個数: 144

約数和(自身を含む): 216408024

約数和(自身を除く): 134957624

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 32, 34, 40, 50, 53, 68, 80, 85, 100, 106, 113, 136, 160, 170, 200, 212, 226, 265, 272, 340, 400, 424, 425, 452, 530, 544, 565, 680, 800, 848, 850, 901, 904, 1060, 1130, 1325, 1360, 1696, 1700, 1802, 1808, 1921, 2120, 2260, 2650, 2720, 2825, 3400, 3604, 3616, 3842, 4240, 4505, 4520, 5300, 5650, 5989, 6800, 7208, 7684, 8480, 9010, 9040, 9605, 10600, 11300, 11978, 13600, 14416, 15368, 18020, 18080, 19210, 21200, 22525, 22600, 23956, 28832, 29945, 30736, 36040, 38420, 42400, 45050, 45200, 47912, 48025, 59890, 61472, 72080, 76840, 90100, 90400, 95824, 96050, 101813, 119780, 144160, 149725, 153680, 180200, 191648, 192100, 203626, 239560, 299450, 307360, 360400, 384200, 407252, 479120, 509065, 598900, 720800, 768400, 814504, 958240, 1018130, 1197800, 1536800, 1629008, 2036260, 2395600, 2545325, 3258016, 4072520, 4791200, 5090650, 8145040, 10181300, 16290080, 20362600, 40725200, 81450400]

約数ペア:

[(1, 81450400), (2, 40725200), (4, 20362600), (5, 16290080), (8, 10181300), (10, 8145040), (16, 5090650), (17, 4791200), (20, 4072520), (25, 3258016), (32, 2545325), (34, 2395600), (40, 2036260), (50, 1629008), (53, 1536800), (68, 1197800), (80, 1018130), (85, 958240), (100, 814504), (106, 768400), (113, 720800), (136, 598900), (160, 509065), (170, 479120), (200, 407252), (212, 384200), (226, 360400), (265, 307360), (272, 299450), (340, 239560), (400, 203626), (424, 192100), (425, 191648), (452, 180200), (530, 153680), (544, 149725), (565, 144160), (680, 119780), (800, 101813), (848, 96050), (850, 95824), (901, 90400), (904, 90100), (1060, 76840), (1130, 72080), (1325, 61472), (1360, 59890), (1696, 48025), (1700, 47912), (1802, 45200), (1808, 45050), (1921, 42400), (2120, 38420), (2260, 36040), (2650, 30736), (2720, 29945), (2825, 28832), (3400, 23956), (3604, 22600), (3616, 22525), (3842, 21200), (4240, 19210), (4505, 18080), (4520, 18020), (5300, 15368), (5650, 14416), (5989, 13600), (6800, 11978), (7208, 11300), (7684, 10600), (8480, 9605), (9010, 9040)]