21955050

素因数分解:

$2^1\times 3^5\times 5^2\times {\mathrm{13}}^1\times {\mathrm{139}}^1$

素因数の和:179

約数の個数: 144

約数和(自身を含む): 66349920

約数和(自身を除く): 44394870

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 25, 26, 27, 30, 39, 45, 50, 54, 65, 75, 78, 81, 90, 117, 130, 135, 139, 150, 162, 195, 225, 234, 243, 270, 278, 325, 351, 390, 405, 417, 450, 486, 585, 650, 675, 695, 702, 810, 834, 975, 1053, 1170, 1215, 1251, 1350, 1390, 1755, 1807, 1950, 2025, 2085, 2106, 2430, 2502, 2925, 3159, 3475, 3510, 3614, 3753, 4050, 4170, 5265, 5421, 5850, 6075, 6255, 6318, 6950, 7506, 8775, 9035, 10425, 10530, 10842, 11259, 12150, 12510, 15795, 16263, 17550, 18070, 18765, 20850, 22518, 26325, 27105, 31275, 31590, 32526, 33777, 37530, 45175, 48789, 52650, 54210, 56295, 62550, 67554, 78975, 81315, 90350, 93825, 97578, 112590, 135525, 146367, 157950, 162630, 168885, 187650, 243945, 271050, 281475, 292734, 337770, 406575, 439101, 487890, 562950, 731835, 813150, 844425, 878202, 1219725, 1463670, 1688850, 2195505, 2439450, 3659175, 4391010, 7318350, 10977525, 21955050]

約数ペア:

[(1, 21955050), (2, 10977525), (3, 7318350), (5, 4391010), (6, 3659175), (9, 2439450), (10, 2195505), (13, 1688850), (15, 1463670), (18, 1219725), (25, 878202), (26, 844425), (27, 813150), (30, 731835), (39, 562950), (45, 487890), (50, 439101), (54, 406575), (65, 337770), (75, 292734), (78, 281475), (81, 271050), (90, 243945), (117, 187650), (130, 168885), (135, 162630), (139, 157950), (150, 146367), (162, 135525), (195, 112590), (225, 97578), (234, 93825), (243, 90350), (270, 81315), (278, 78975), (325, 67554), (351, 62550), (390, 56295), (405, 54210), (417, 52650), (450, 48789), (486, 45175), (585, 37530), (650, 33777), (675, 32526), (695, 31590), (702, 31275), (810, 27105), (834, 26325), (975, 22518), (1053, 20850), (1170, 18765), (1215, 18070), (1251, 17550), (1350, 16263), (1390, 15795), (1755, 12510), (1807, 12150), (1950, 11259), (2025, 10842), (2085, 10530), (2106, 10425), (2430, 9035), (2502, 8775), (2925, 7506), (3159, 6950), (3475, 6318), (3510, 6255), (3614, 6075), (3753, 5850), (4050, 5421), (4170, 5265)]