20895240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{137}}^1$

素因数の和:223

約数の個数: 128

約数和(自身を含む): 66769920

約数和(自身を除く): 45874680

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 41, 60, 62, 82, 93, 120, 123, 124, 137, 155, 164, 186, 205, 246, 248, 274, 310, 328, 372, 410, 411, 465, 492, 548, 615, 620, 685, 744, 820, 822, 930, 984, 1096, 1230, 1240, 1271, 1370, 1640, 1644, 1860, 2055, 2460, 2542, 2740, 3288, 3720, 3813, 4110, 4247, 4920, 5084, 5480, 5617, 6355, 7626, 8220, 8494, 10168, 11234, 12710, 12741, 15252, 16440, 16851, 16988, 19065, 21235, 22468, 25420, 25482, 28085, 30504, 33702, 33976, 38130, 42470, 44936, 50840, 50964, 56170, 63705, 67404, 76260, 84255, 84940, 101928, 112340, 127410, 134808, 152520, 168510, 169880, 174127, 224680, 254820, 337020, 348254, 509640, 522381, 674040, 696508, 870635, 1044762, 1393016, 1741270, 2089524, 2611905, 3482540, 4179048, 5223810, 6965080, 10447620, 20895240]

約数ペア:

[(1, 20895240), (2, 10447620), (3, 6965080), (4, 5223810), (5, 4179048), (6, 3482540), (8, 2611905), (10, 2089524), (12, 1741270), (15, 1393016), (20, 1044762), (24, 870635), (30, 696508), (31, 674040), (40, 522381), (41, 509640), (60, 348254), (62, 337020), (82, 254820), (93, 224680), (120, 174127), (123, 169880), (124, 168510), (137, 152520), (155, 134808), (164, 127410), (186, 112340), (205, 101928), (246, 84940), (248, 84255), (274, 76260), (310, 67404), (328, 63705), (372, 56170), (410, 50964), (411, 50840), (465, 44936), (492, 42470), (548, 38130), (615, 33976), (620, 33702), (685, 30504), (744, 28085), (820, 25482), (822, 25420), (930, 22468), (984, 21235), (1096, 19065), (1230, 16988), (1240, 16851), (1271, 16440), (1370, 15252), (1640, 12741), (1644, 12710), (1860, 11234), (2055, 10168), (2460, 8494), (2542, 8220), (2740, 7626), (3288, 6355), (3720, 5617), (3813, 5480), (4110, 5084), (4247, 4920)]