201721960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{643}}^1$

素因数の和:719

約数の個数: 128

約数和(自身を含む): 534159360

約数和(自身を除く): 332437400

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 23, 31, 40, 44, 46, 55, 62, 88, 92, 110, 115, 124, 155, 184, 220, 230, 248, 253, 310, 341, 440, 460, 506, 620, 643, 682, 713, 920, 1012, 1240, 1265, 1286, 1364, 1426, 1705, 2024, 2530, 2572, 2728, 2852, 3215, 3410, 3565, 5060, 5144, 5704, 6430, 6820, 7073, 7130, 7843, 10120, 12860, 13640, 14146, 14260, 14789, 15686, 19933, 25720, 28292, 28520, 29578, 31372, 35365, 39215, 39866, 56584, 59156, 62744, 70730, 73945, 78430, 79732, 99665, 118312, 141460, 147890, 156860, 159464, 162679, 199330, 219263, 282920, 295780, 313720, 325358, 398660, 438526, 458459, 591560, 650716, 797320, 813395, 877052, 916918, 1096315, 1301432, 1626790, 1754104, 1833836, 2192630, 2292295, 3253580, 3667672, 4385260, 4584590, 5043049, 6507160, 8770520, 9169180, 10086098, 18338360, 20172196, 25215245, 40344392, 50430490, 100860980, 201721960]

約数ペア:

[(1, 201721960), (2, 100860980), (4, 50430490), (5, 40344392), (8, 25215245), (10, 20172196), (11, 18338360), (20, 10086098), (22, 9169180), (23, 8770520), (31, 6507160), (40, 5043049), (44, 4584590), (46, 4385260), (55, 3667672), (62, 3253580), (88, 2292295), (92, 2192630), (110, 1833836), (115, 1754104), (124, 1626790), (155, 1301432), (184, 1096315), (220, 916918), (230, 877052), (248, 813395), (253, 797320), (310, 650716), (341, 591560), (440, 458459), (460, 438526), (506, 398660), (620, 325358), (643, 313720), (682, 295780), (713, 282920), (920, 219263), (1012, 199330), (1240, 162679), (1265, 159464), (1286, 156860), (1364, 147890), (1426, 141460), (1705, 118312), (2024, 99665), (2530, 79732), (2572, 78430), (2728, 73945), (2852, 70730), (3215, 62744), (3410, 59156), (3565, 56584), (5060, 39866), (5144, 39215), (5704, 35365), (6430, 31372), (6820, 29578), (7073, 28520), (7130, 28292), (7843, 25720), (10120, 19933), (12860, 15686), (13640, 14789), (14146, 14260)]