81392740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{191}}^1$

素因数の和:373

約数の個数: 96

約数和(自身を含む): 203212800

約数和(自身を除く): 121820060

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 149, 191, 220, 260, 286, 298, 382, 572, 596, 715, 745, 764, 955, 1430, 1490, 1639, 1910, 1937, 2101, 2483, 2860, 2980, 3278, 3820, 3874, 4202, 4966, 6556, 7748, 8195, 8404, 9685, 9932, 10505, 12415, 16390, 19370, 21010, 21307, 24830, 27313, 28459, 32780, 38740, 42020, 42614, 49660, 54626, 56918, 85228, 106535, 109252, 113836, 136565, 142295, 213070, 273130, 284590, 313049, 369967, 426140, 546260, 569180, 626098, 739934, 1252196, 1479868, 1565245, 1849835, 3130490, 3699670, 4069637, 6260980, 7399340, 8139274, 16278548, 20348185, 40696370, 81392740]

約数ペア:

[(1, 81392740), (2, 40696370), (4, 20348185), (5, 16278548), (10, 8139274), (11, 7399340), (13, 6260980), (20, 4069637), (22, 3699670), (26, 3130490), (44, 1849835), (52, 1565245), (55, 1479868), (65, 1252196), (110, 739934), (130, 626098), (143, 569180), (149, 546260), (191, 426140), (220, 369967), (260, 313049), (286, 284590), (298, 273130), (382, 213070), (572, 142295), (596, 136565), (715, 113836), (745, 109252), (764, 106535), (955, 85228), (1430, 56918), (1490, 54626), (1639, 49660), (1910, 42614), (1937, 42020), (2101, 38740), (2483, 32780), (2860, 28459), (2980, 27313), (3278, 24830), (3820, 21307), (3874, 21010), (4202, 19370), (4966, 16390), (6556, 12415), (7748, 10505), (8195, 9932), (8404, 9685)]