28785420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{409}}^1$

素因数の和:464

約数の個数: 144

約数和(自身を含む): 96707520

約数和(自身を除く): 67922100

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 23, 30, 34, 36, 45, 46, 51, 60, 68, 69, 85, 90, 92, 102, 115, 138, 153, 170, 180, 204, 207, 230, 255, 276, 306, 340, 345, 391, 409, 414, 460, 510, 612, 690, 765, 782, 818, 828, 1020, 1035, 1173, 1227, 1380, 1530, 1564, 1636, 1955, 2045, 2070, 2346, 2454, 3060, 3519, 3681, 3910, 4090, 4140, 4692, 4908, 5865, 6135, 6953, 7038, 7362, 7820, 8180, 9407, 11730, 12270, 13906, 14076, 14724, 17595, 18405, 18814, 20859, 23460, 24540, 27812, 28221, 34765, 35190, 36810, 37628, 41718, 47035, 56442, 62577, 69530, 70380, 73620, 83436, 84663, 94070, 104295, 112884, 125154, 139060, 141105, 159919, 169326, 188140, 208590, 250308, 282210, 312885, 319838, 338652, 417180, 423315, 479757, 564420, 625770, 639676, 799595, 846630, 959514, 1251540, 1439271, 1599190, 1693260, 1919028, 2398785, 2878542, 3198380, 4797570, 5757084, 7196355, 9595140, 14392710, 28785420]

約数ペア:

[(1, 28785420), (2, 14392710), (3, 9595140), (4, 7196355), (5, 5757084), (6, 4797570), (9, 3198380), (10, 2878542), (12, 2398785), (15, 1919028), (17, 1693260), (18, 1599190), (20, 1439271), (23, 1251540), (30, 959514), (34, 846630), (36, 799595), (45, 639676), (46, 625770), (51, 564420), (60, 479757), (68, 423315), (69, 417180), (85, 338652), (90, 319838), (92, 312885), (102, 282210), (115, 250308), (138, 208590), (153, 188140), (170, 169326), (180, 159919), (204, 141105), (207, 139060), (230, 125154), (255, 112884), (276, 104295), (306, 94070), (340, 84663), (345, 83436), (391, 73620), (409, 70380), (414, 69530), (460, 62577), (510, 56442), (612, 47035), (690, 41718), (765, 37628), (782, 36810), (818, 35190), (828, 34765), (1020, 28221), (1035, 27812), (1173, 24540), (1227, 23460), (1380, 20859), (1530, 18814), (1564, 18405), (1636, 17595), (1955, 14724), (2045, 14076), (2070, 13906), (2346, 12270), (2454, 11730), (3060, 9407), (3519, 8180), (3681, 7820), (3910, 7362), (4090, 7038), (4140, 6953), (4692, 6135), (4908, 5865)]