78002820

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1997}}^1$

素因数の和:2050

約数の個数: 144

約数和(自身を含む): 279272448

約数和(自身を除く): 201269628

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 31, 35, 36, 42, 45, 60, 62, 63, 70, 84, 90, 93, 105, 124, 126, 140, 155, 180, 186, 210, 217, 252, 279, 310, 315, 372, 420, 434, 465, 558, 620, 630, 651, 868, 930, 1085, 1116, 1260, 1302, 1395, 1860, 1953, 1997, 2170, 2604, 2790, 3255, 3906, 3994, 4340, 5580, 5991, 6510, 7812, 7988, 9765, 9985, 11982, 13020, 13979, 17973, 19530, 19970, 23964, 27958, 29955, 35946, 39060, 39940, 41937, 55916, 59910, 61907, 69895, 71892, 83874, 89865, 119820, 123814, 125811, 139790, 167748, 179730, 185721, 209685, 247628, 251622, 279580, 309535, 359460, 371442, 419370, 433349, 503244, 557163, 619070, 629055, 742884, 838740, 866698, 928605, 1114326, 1238140, 1258110, 1300047, 1733396, 1857210, 2166745, 2228652, 2516220, 2600094, 2785815, 3714420, 3900141, 4333490, 5200188, 5571630, 6500235, 7800282, 8666980, 11143260, 13000470, 15600564, 19500705, 26000940, 39001410, 78002820]

約数ペア:

[(1, 78002820), (2, 39001410), (3, 26000940), (4, 19500705), (5, 15600564), (6, 13000470), (7, 11143260), (9, 8666980), (10, 7800282), (12, 6500235), (14, 5571630), (15, 5200188), (18, 4333490), (20, 3900141), (21, 3714420), (28, 2785815), (30, 2600094), (31, 2516220), (35, 2228652), (36, 2166745), (42, 1857210), (45, 1733396), (60, 1300047), (62, 1258110), (63, 1238140), (70, 1114326), (84, 928605), (90, 866698), (93, 838740), (105, 742884), (124, 629055), (126, 619070), (140, 557163), (155, 503244), (180, 433349), (186, 419370), (210, 371442), (217, 359460), (252, 309535), (279, 279580), (310, 251622), (315, 247628), (372, 209685), (420, 185721), (434, 179730), (465, 167748), (558, 139790), (620, 125811), (630, 123814), (651, 119820), (868, 89865), (930, 83874), (1085, 71892), (1116, 69895), (1260, 61907), (1302, 59910), (1395, 55916), (1860, 41937), (1953, 39940), (1997, 39060), (2170, 35946), (2604, 29955), (2790, 27958), (3255, 23964), (3906, 19970), (3994, 19530), (4340, 17973), (5580, 13979), (5991, 13020), (6510, 11982), (7812, 9985), (7988, 9765)]