39998920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{61}}^1\times {\mathrm{97}}^1$

素因数の和:195

約数の個数: 96

約数和(自身を含む): 100071720

約数和(自身を除く): 60072800

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 61, 65, 97, 104, 122, 130, 169, 194, 244, 260, 305, 338, 388, 485, 488, 520, 610, 676, 776, 793, 845, 970, 1220, 1261, 1352, 1586, 1690, 1940, 2440, 2522, 3172, 3380, 3880, 3965, 5044, 5917, 6305, 6344, 6760, 7930, 10088, 10309, 11834, 12610, 15860, 16393, 20618, 23668, 25220, 29585, 31720, 32786, 41236, 47336, 50440, 51545, 59170, 65572, 76921, 81965, 82472, 103090, 118340, 131144, 153842, 163930, 206180, 236680, 307684, 327860, 384605, 412360, 615368, 655720, 769210, 999973, 1538420, 1999946, 3076840, 3999892, 4999865, 7999784, 9999730, 19999460, 39998920]

約数ペア:

[(1, 39998920), (2, 19999460), (4, 9999730), (5, 7999784), (8, 4999865), (10, 3999892), (13, 3076840), (20, 1999946), (26, 1538420), (40, 999973), (52, 769210), (61, 655720), (65, 615368), (97, 412360), (104, 384605), (122, 327860), (130, 307684), (169, 236680), (194, 206180), (244, 163930), (260, 153842), (305, 131144), (338, 118340), (388, 103090), (485, 82472), (488, 81965), (520, 76921), (610, 65572), (676, 59170), (776, 51545), (793, 50440), (845, 47336), (970, 41236), (1220, 32786), (1261, 31720), (1352, 29585), (1586, 25220), (1690, 23668), (1940, 20618), (2440, 16393), (2522, 15860), (3172, 12610), (3380, 11834), (3880, 10309), (3965, 10088), (5044, 7930), (5917, 6760), (6305, 6344)]