21701300

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1$

素因数の和:201

約数の個数: 72

約数和(自身を含む): 49580160

約数和(自身を除く): 27878860

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 67, 79, 82, 100, 134, 158, 164, 205, 268, 316, 335, 395, 410, 670, 790, 820, 1025, 1340, 1580, 1675, 1975, 2050, 2747, 3239, 3350, 3950, 4100, 5293, 5494, 6478, 6700, 7900, 10586, 10988, 12956, 13735, 16195, 21172, 26465, 27470, 32390, 52930, 54940, 64780, 68675, 80975, 105860, 132325, 137350, 161950, 217013, 264650, 274700, 323900, 434026, 529300, 868052, 1085065, 2170130, 4340260, 5425325, 10850650, 21701300]

約数ペア:

[(1, 21701300), (2, 10850650), (4, 5425325), (5, 4340260), (10, 2170130), (20, 1085065), (25, 868052), (41, 529300), (50, 434026), (67, 323900), (79, 274700), (82, 264650), (100, 217013), (134, 161950), (158, 137350), (164, 132325), (205, 105860), (268, 80975), (316, 68675), (335, 64780), (395, 54940), (410, 52930), (670, 32390), (790, 27470), (820, 26465), (1025, 21172), (1340, 16195), (1580, 13735), (1675, 12956), (1975, 10988), (2050, 10586), (2747, 7900), (3239, 6700), (3350, 6478), (3950, 5494), (4100, 5293)]