19217800

素因数分解:

$2^3\times 5^2\times 7^2\times {\mathrm{37}}^1\times {\mathrm{53}}^1$

素因数の和:120

約数の個数: 144

約数和(自身を含む): 54388260

約数和(自身を除く): 35170460

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 37, 40, 49, 50, 53, 56, 70, 74, 98, 100, 106, 140, 148, 175, 185, 196, 200, 212, 245, 259, 265, 280, 296, 350, 370, 371, 392, 424, 490, 518, 530, 700, 740, 742, 925, 980, 1036, 1060, 1225, 1295, 1325, 1400, 1480, 1484, 1813, 1850, 1855, 1960, 1961, 2072, 2120, 2450, 2590, 2597, 2650, 2968, 3626, 3700, 3710, 3922, 4900, 5180, 5194, 5300, 6475, 7252, 7400, 7420, 7844, 9065, 9275, 9800, 9805, 10360, 10388, 10600, 12950, 12985, 13727, 14504, 14840, 15688, 18130, 18550, 19610, 20776, 25900, 25970, 27454, 36260, 37100, 39220, 45325, 49025, 51800, 51940, 54908, 64925, 68635, 72520, 74200, 78440, 90650, 96089, 98050, 103880, 109816, 129850, 137270, 181300, 192178, 196100, 259700, 274540, 343175, 362600, 384356, 392200, 480445, 519400, 549080, 686350, 768712, 960890, 1372700, 1921780, 2402225, 2745400, 3843560, 4804450, 9608900, 19217800]

約数ペア:

[(1, 19217800), (2, 9608900), (4, 4804450), (5, 3843560), (7, 2745400), (8, 2402225), (10, 1921780), (14, 1372700), (20, 960890), (25, 768712), (28, 686350), (35, 549080), (37, 519400), (40, 480445), (49, 392200), (50, 384356), (53, 362600), (56, 343175), (70, 274540), (74, 259700), (98, 196100), (100, 192178), (106, 181300), (140, 137270), (148, 129850), (175, 109816), (185, 103880), (196, 98050), (200, 96089), (212, 90650), (245, 78440), (259, 74200), (265, 72520), (280, 68635), (296, 64925), (350, 54908), (370, 51940), (371, 51800), (392, 49025), (424, 45325), (490, 39220), (518, 37100), (530, 36260), (700, 27454), (740, 25970), (742, 25900), (925, 20776), (980, 19610), (1036, 18550), (1060, 18130), (1225, 15688), (1295, 14840), (1325, 14504), (1400, 13727), (1480, 12985), (1484, 12950), (1813, 10600), (1850, 10388), (1855, 10360), (1960, 9805), (1961, 9800), (2072, 9275), (2120, 9065), (2450, 7844), (2590, 7420), (2597, 7400), (2650, 7252), (2968, 6475), (3626, 5300), (3700, 5194), (3710, 5180), (3922, 4900)]