20553680

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{127}}^1$

素因数の和:181

約数の個数: 120

約数和(自身を含む): 58472448

約数和(自身を除く): 37918768

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 34, 35, 40, 56, 68, 70, 80, 85, 112, 119, 127, 136, 140, 170, 238, 254, 272, 280, 289, 340, 476, 508, 560, 578, 595, 635, 680, 889, 952, 1016, 1156, 1190, 1270, 1360, 1445, 1778, 1904, 2023, 2032, 2159, 2312, 2380, 2540, 2890, 3556, 4046, 4318, 4445, 4624, 4760, 5080, 5780, 7112, 8092, 8636, 8890, 9520, 10115, 10160, 10795, 11560, 14224, 15113, 16184, 17272, 17780, 20230, 21590, 23120, 30226, 32368, 34544, 35560, 36703, 40460, 43180, 60452, 71120, 73406, 75565, 80920, 86360, 120904, 146812, 151130, 161840, 172720, 183515, 241808, 256921, 293624, 302260, 367030, 513842, 587248, 604520, 734060, 1027684, 1209040, 1284605, 1468120, 2055368, 2569210, 2936240, 4110736, 5138420, 10276840, 20553680]

約数ペア:

[(1, 20553680), (2, 10276840), (4, 5138420), (5, 4110736), (7, 2936240), (8, 2569210), (10, 2055368), (14, 1468120), (16, 1284605), (17, 1209040), (20, 1027684), (28, 734060), (34, 604520), (35, 587248), (40, 513842), (56, 367030), (68, 302260), (70, 293624), (80, 256921), (85, 241808), (112, 183515), (119, 172720), (127, 161840), (136, 151130), (140, 146812), (170, 120904), (238, 86360), (254, 80920), (272, 75565), (280, 73406), (289, 71120), (340, 60452), (476, 43180), (508, 40460), (560, 36703), (578, 35560), (595, 34544), (635, 32368), (680, 30226), (889, 23120), (952, 21590), (1016, 20230), (1156, 17780), (1190, 17272), (1270, 16184), (1360, 15113), (1445, 14224), (1778, 11560), (1904, 10795), (2023, 10160), (2032, 10115), (2159, 9520), (2312, 8890), (2380, 8636), (2540, 8092), (2890, 7112), (3556, 5780), (4046, 5080), (4318, 4760), (4445, 4624)]