18967040

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1$

素因数の和:293

約数の個数: 80

約数和(自身を含む): 47139840

約数和(自身を除く): 28172800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 239, 248, 256, 310, 320, 478, 496, 512, 620, 640, 956, 992, 1195, 1240, 1280, 1912, 1984, 2390, 2480, 2560, 3824, 3968, 4780, 4960, 7409, 7648, 7936, 9560, 9920, 14818, 15296, 15872, 19120, 19840, 29636, 30592, 37045, 38240, 39680, 59272, 61184, 74090, 76480, 79360, 118544, 122368, 148180, 152960, 237088, 296360, 305920, 474176, 592720, 611840, 948352, 1185440, 1896704, 2370880, 3793408, 4741760, 9483520, 18967040]

約数ペア:

[(1, 18967040), (2, 9483520), (4, 4741760), (5, 3793408), (8, 2370880), (10, 1896704), (16, 1185440), (20, 948352), (31, 611840), (32, 592720), (40, 474176), (62, 305920), (64, 296360), (80, 237088), (124, 152960), (128, 148180), (155, 122368), (160, 118544), (239, 79360), (248, 76480), (256, 74090), (310, 61184), (320, 59272), (478, 39680), (496, 38240), (512, 37045), (620, 30592), (640, 29636), (956, 19840), (992, 19120), (1195, 15872), (1240, 15296), (1280, 14818), (1912, 9920), (1984, 9560), (2390, 7936), (2480, 7648), (2560, 7409), (3824, 4960), (3968, 4780)]