78816420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{599}}^1$

素因数の和:674

約数の個数: 144

約数和(自身を含む): 259459200

約数和(自身を除く): 180642780

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 43, 45, 51, 60, 68, 85, 86, 90, 102, 129, 153, 170, 172, 180, 204, 215, 255, 258, 306, 340, 387, 430, 510, 516, 599, 612, 645, 731, 765, 774, 860, 1020, 1198, 1290, 1462, 1530, 1548, 1797, 1935, 2193, 2396, 2580, 2924, 2995, 3060, 3594, 3655, 3870, 4386, 5391, 5990, 6579, 7188, 7310, 7740, 8772, 8985, 10183, 10782, 10965, 11980, 13158, 14620, 17970, 20366, 21564, 21930, 25757, 26316, 26955, 30549, 32895, 35940, 40732, 43860, 50915, 51514, 53910, 61098, 65790, 77271, 91647, 101830, 103028, 107820, 122196, 128785, 131580, 152745, 154542, 183294, 203660, 231813, 257570, 305490, 309084, 366588, 386355, 437869, 458235, 463626, 515140, 610980, 772710, 875738, 916470, 927252, 1159065, 1313607, 1545420, 1751476, 1832940, 2189345, 2318130, 2627214, 3940821, 4378690, 4636260, 5254428, 6568035, 7881642, 8757380, 13136070, 15763284, 19704105, 26272140, 39408210, 78816420]

約数ペア:

[(1, 78816420), (2, 39408210), (3, 26272140), (4, 19704105), (5, 15763284), (6, 13136070), (9, 8757380), (10, 7881642), (12, 6568035), (15, 5254428), (17, 4636260), (18, 4378690), (20, 3940821), (30, 2627214), (34, 2318130), (36, 2189345), (43, 1832940), (45, 1751476), (51, 1545420), (60, 1313607), (68, 1159065), (85, 927252), (86, 916470), (90, 875738), (102, 772710), (129, 610980), (153, 515140), (170, 463626), (172, 458235), (180, 437869), (204, 386355), (215, 366588), (255, 309084), (258, 305490), (306, 257570), (340, 231813), (387, 203660), (430, 183294), (510, 154542), (516, 152745), (599, 131580), (612, 128785), (645, 122196), (731, 107820), (765, 103028), (774, 101830), (860, 91647), (1020, 77271), (1198, 65790), (1290, 61098), (1462, 53910), (1530, 51514), (1548, 50915), (1797, 43860), (1935, 40732), (2193, 35940), (2396, 32895), (2580, 30549), (2924, 26955), (2995, 26316), (3060, 25757), (3594, 21930), (3655, 21564), (3870, 20366), (4386, 17970), (5391, 14620), (5990, 13158), (6579, 11980), (7188, 10965), (7310, 10782), (7740, 10183), (8772, 8985)]