20705850

素因数分解:

$2^1\times 3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1$

素因数の和:165

約数の個数: 144

約数和(自身を含む): 62674560

約数和(自身を除く): 41968710

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 25, 30, 33, 45, 47, 50, 55, 66, 75, 89, 90, 94, 99, 110, 141, 150, 165, 178, 198, 225, 235, 267, 275, 282, 330, 423, 445, 450, 470, 495, 517, 534, 550, 705, 801, 825, 846, 890, 979, 990, 1034, 1175, 1335, 1410, 1551, 1602, 1650, 1958, 2115, 2225, 2350, 2475, 2585, 2670, 2937, 3102, 3525, 4005, 4183, 4230, 4450, 4653, 4895, 4950, 5170, 5874, 6675, 7050, 7755, 8010, 8366, 8811, 9306, 9790, 10575, 12549, 12925, 13350, 14685, 15510, 17622, 20025, 20915, 21150, 23265, 24475, 25098, 25850, 29370, 37647, 38775, 40050, 41830, 44055, 46013, 46530, 48950, 62745, 73425, 75294, 77550, 88110, 92026, 104575, 116325, 125490, 138039, 146850, 188235, 209150, 220275, 230065, 232650, 276078, 313725, 376470, 414117, 440550, 460130, 627450, 690195, 828234, 941175, 1150325, 1380390, 1882350, 2070585, 2300650, 3450975, 4141170, 6901950, 10352925, 20705850]

約数ペア:

[(1, 20705850), (2, 10352925), (3, 6901950), (5, 4141170), (6, 3450975), (9, 2300650), (10, 2070585), (11, 1882350), (15, 1380390), (18, 1150325), (22, 941175), (25, 828234), (30, 690195), (33, 627450), (45, 460130), (47, 440550), (50, 414117), (55, 376470), (66, 313725), (75, 276078), (89, 232650), (90, 230065), (94, 220275), (99, 209150), (110, 188235), (141, 146850), (150, 138039), (165, 125490), (178, 116325), (198, 104575), (225, 92026), (235, 88110), (267, 77550), (275, 75294), (282, 73425), (330, 62745), (423, 48950), (445, 46530), (450, 46013), (470, 44055), (495, 41830), (517, 40050), (534, 38775), (550, 37647), (705, 29370), (801, 25850), (825, 25098), (846, 24475), (890, 23265), (979, 21150), (990, 20915), (1034, 20025), (1175, 17622), (1335, 15510), (1410, 14685), (1551, 13350), (1602, 12925), (1650, 12549), (1958, 10575), (2115, 9790), (2225, 9306), (2350, 8811), (2475, 8366), (2585, 8010), (2670, 7755), (2937, 7050), (3102, 6675), (3525, 5874), (4005, 5170), (4183, 4950), (4230, 4895), (4450, 4653)]