18991840

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{547}}^1$

素因数の和:600

約数の個数: 96

約数和(自身を含む): 53028864

約数和(自身を除く): 34037024

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 56, 62, 70, 80, 112, 124, 140, 155, 160, 217, 224, 248, 280, 310, 434, 496, 547, 560, 620, 868, 992, 1085, 1094, 1120, 1240, 1736, 2170, 2188, 2480, 2735, 3472, 3829, 4340, 4376, 4960, 5470, 6944, 7658, 8680, 8752, 10940, 15316, 16957, 17360, 17504, 19145, 21880, 30632, 33914, 34720, 38290, 43760, 61264, 67828, 76580, 84785, 87520, 118699, 122528, 135656, 153160, 169570, 237398, 271312, 306320, 339140, 474796, 542624, 593495, 612640, 678280, 949592, 1186990, 1356560, 1899184, 2373980, 2713120, 3798368, 4747960, 9495920, 18991840]

約数ペア:

[(1, 18991840), (2, 9495920), (4, 4747960), (5, 3798368), (7, 2713120), (8, 2373980), (10, 1899184), (14, 1356560), (16, 1186990), (20, 949592), (28, 678280), (31, 612640), (32, 593495), (35, 542624), (40, 474796), (56, 339140), (62, 306320), (70, 271312), (80, 237398), (112, 169570), (124, 153160), (140, 135656), (155, 122528), (160, 118699), (217, 87520), (224, 84785), (248, 76580), (280, 67828), (310, 61264), (434, 43760), (496, 38290), (547, 34720), (560, 33914), (620, 30632), (868, 21880), (992, 19145), (1085, 17504), (1094, 17360), (1120, 16957), (1240, 15316), (1736, 10940), (2170, 8752), (2188, 8680), (2480, 7658), (2735, 6944), (3472, 5470), (3829, 4960), (4340, 4376)]