21453320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{4507}}^1$

素因数の和:4542

約数の個数: 64

約数和(自身を含む): 58423680

約数和(自身を除く): 36970360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 56, 68, 70, 85, 119, 136, 140, 170, 238, 280, 340, 476, 595, 680, 952, 1190, 2380, 4507, 4760, 9014, 18028, 22535, 31549, 36056, 45070, 63098, 76619, 90140, 126196, 153238, 157745, 180280, 252392, 306476, 315490, 383095, 536333, 612952, 630980, 766190, 1072666, 1261960, 1532380, 2145332, 2681665, 3064760, 4290664, 5363330, 10726660, 21453320]

約数ペア:

[(1, 21453320), (2, 10726660), (4, 5363330), (5, 4290664), (7, 3064760), (8, 2681665), (10, 2145332), (14, 1532380), (17, 1261960), (20, 1072666), (28, 766190), (34, 630980), (35, 612952), (40, 536333), (56, 383095), (68, 315490), (70, 306476), (85, 252392), (119, 180280), (136, 157745), (140, 153238), (170, 126196), (238, 90140), (280, 76619), (340, 63098), (476, 45070), (595, 36056), (680, 31549), (952, 22535), (1190, 18028), (2380, 9014), (4507, 4760)]