18871331840

素因数分解:

$2^{10}\times 5^1\times {\mathrm{31}}^1\times {\mathrm{118897}}^1$

素因数の和:118953

約数の個数: 88

約数和(自身を含む): 46729767552

約数和(自身を除く): 27858435712

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 512, 620, 640, 992, 1024, 1240, 1280, 1984, 2480, 2560, 3968, 4960, 5120, 7936, 9920, 15872, 19840, 31744, 39680, 79360, 118897, 158720, 237794, 475588, 594485, 951176, 1188970, 1902352, 2377940, 3685807, 3804704, 4755880, 7371614, 7609408, 9511760, 14743228, 15218816, 18429035, 19023520, 29486456, 30437632, 36858070, 38047040, 58972912, 60875264, 73716140, 76094080, 117945824, 121750528, 147432280, 152188160, 235891648, 294864560, 304376320, 471783296, 589729120, 608752640, 943566592, 1179458240, 1887133184, 2358916480, 3774266368, 4717832960, 9435665920, 18871331840]

約数ペア:

[(1, 18871331840), (2, 9435665920), (4, 4717832960), (5, 3774266368), (8, 2358916480), (10, 1887133184), (16, 1179458240), (20, 943566592), (31, 608752640), (32, 589729120), (40, 471783296), (62, 304376320), (64, 294864560), (80, 235891648), (124, 152188160), (128, 147432280), (155, 121750528), (160, 117945824), (248, 76094080), (256, 73716140), (310, 60875264), (320, 58972912), (496, 38047040), (512, 36858070), (620, 30437632), (640, 29486456), (992, 19023520), (1024, 18429035), (1240, 15218816), (1280, 14743228), (1984, 9511760), (2480, 7609408), (2560, 7371614), (3968, 4755880), (4960, 3804704), (5120, 3685807), (7936, 2377940), (9920, 1902352), (15872, 1188970), (19840, 951176), (31744, 594485), (39680, 475588), (79360, 237794), (118897, 158720)]