78061720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{97}}^1$

素因数の和:209

約数の個数: 128

約数和(自身を含む): 203212800

約数和(自身を除く): 125151080

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 55, 59, 62, 88, 97, 110, 118, 124, 155, 194, 220, 236, 248, 295, 310, 341, 388, 440, 472, 485, 590, 620, 649, 682, 776, 970, 1067, 1180, 1240, 1298, 1364, 1705, 1829, 1940, 2134, 2360, 2596, 2728, 3007, 3245, 3410, 3658, 3880, 4268, 5192, 5335, 5723, 6014, 6490, 6820, 7316, 8536, 9145, 10670, 11446, 12028, 12980, 13640, 14632, 15035, 18290, 20119, 21340, 22892, 24056, 25960, 28615, 30070, 33077, 36580, 40238, 42680, 45784, 57230, 60140, 62953, 66154, 73160, 80476, 100595, 114460, 120280, 125906, 132308, 160952, 165385, 177413, 201190, 228920, 251812, 264616, 314765, 330770, 354826, 402380, 503624, 629530, 661540, 709652, 804760, 887065, 1259060, 1323080, 1419304, 1774130, 1951543, 2518120, 3548260, 3903086, 7096520, 7806172, 9757715, 15612344, 19515430, 39030860, 78061720]

約数ペア:

[(1, 78061720), (2, 39030860), (4, 19515430), (5, 15612344), (8, 9757715), (10, 7806172), (11, 7096520), (20, 3903086), (22, 3548260), (31, 2518120), (40, 1951543), (44, 1774130), (55, 1419304), (59, 1323080), (62, 1259060), (88, 887065), (97, 804760), (110, 709652), (118, 661540), (124, 629530), (155, 503624), (194, 402380), (220, 354826), (236, 330770), (248, 314765), (295, 264616), (310, 251812), (341, 228920), (388, 201190), (440, 177413), (472, 165385), (485, 160952), (590, 132308), (620, 125906), (649, 120280), (682, 114460), (776, 100595), (970, 80476), (1067, 73160), (1180, 66154), (1240, 62953), (1298, 60140), (1364, 57230), (1705, 45784), (1829, 42680), (1940, 40238), (2134, 36580), (2360, 33077), (2596, 30070), (2728, 28615), (3007, 25960), (3245, 24056), (3410, 22892), (3658, 21340), (3880, 20119), (4268, 18290), (5192, 15035), (5335, 14632), (5723, 13640), (6014, 12980), (6490, 12028), (6820, 11446), (7316, 10670), (8536, 9145)]