128551600

素因数分解:

$2^4\times 5^2\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{157}}^1$

素因数の和:287

約数の個数: 120

約数和(自身を含む): 327970080

約数和(自身を除く): 199418480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 25, 40, 46, 50, 80, 89, 92, 100, 115, 157, 178, 184, 200, 230, 314, 356, 368, 400, 445, 460, 575, 628, 712, 785, 890, 920, 1150, 1256, 1424, 1570, 1780, 1840, 2047, 2225, 2300, 2512, 3140, 3560, 3611, 3925, 4094, 4450, 4600, 6280, 7120, 7222, 7850, 8188, 8900, 9200, 10235, 12560, 13973, 14444, 15700, 16376, 17800, 18055, 20470, 27946, 28888, 31400, 32752, 35600, 36110, 40940, 51175, 55892, 57776, 62800, 69865, 72220, 81880, 90275, 102350, 111784, 139730, 144440, 163760, 180550, 204700, 223568, 279460, 288880, 321379, 349325, 361100, 409400, 558920, 642758, 698650, 722200, 818800, 1117840, 1285516, 1397300, 1444400, 1606895, 2571032, 2794600, 3213790, 5142064, 5589200, 6427580, 8034475, 12855160, 16068950, 25710320, 32137900, 64275800, 128551600]

約数ペア:

[(1, 128551600), (2, 64275800), (4, 32137900), (5, 25710320), (8, 16068950), (10, 12855160), (16, 8034475), (20, 6427580), (23, 5589200), (25, 5142064), (40, 3213790), (46, 2794600), (50, 2571032), (80, 1606895), (89, 1444400), (92, 1397300), (100, 1285516), (115, 1117840), (157, 818800), (178, 722200), (184, 698650), (200, 642758), (230, 558920), (314, 409400), (356, 361100), (368, 349325), (400, 321379), (445, 288880), (460, 279460), (575, 223568), (628, 204700), (712, 180550), (785, 163760), (890, 144440), (920, 139730), (1150, 111784), (1256, 102350), (1424, 90275), (1570, 81880), (1780, 72220), (1840, 69865), (2047, 62800), (2225, 57776), (2300, 55892), (2512, 51175), (3140, 40940), (3560, 36110), (3611, 35600), (3925, 32752), (4094, 31400), (4450, 28888), (4600, 27946), (6280, 20470), (7120, 18055), (7222, 17800), (7850, 16376), (8188, 15700), (8900, 14444), (9200, 13973), (10235, 12560)]