80811110

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:257

約数の個数: 64

約数和(自身を含む): 158630400

約数和(自身を除く): 77819290

約数列:

[1, 2, 5, 10, 29, 31, 58, 62, 89, 101, 145, 155, 178, 202, 290, 310, 445, 505, 890, 899, 1010, 1798, 2581, 2759, 2929, 3131, 4495, 5162, 5518, 5858, 6262, 8989, 8990, 12905, 13795, 14645, 15655, 17978, 25810, 27590, 29290, 31310, 44945, 80011, 89890, 90799, 160022, 181598, 260681, 278659, 400055, 453995, 521362, 557318, 800110, 907990, 1303405, 1393295, 2606810, 2786590, 8081111, 16162222, 40405555, 80811110]

約数ペア:

[(1, 80811110), (2, 40405555), (5, 16162222), (10, 8081111), (29, 2786590), (31, 2606810), (58, 1393295), (62, 1303405), (89, 907990), (101, 800110), (145, 557318), (155, 521362), (178, 453995), (202, 400055), (290, 278659), (310, 260681), (445, 181598), (505, 160022), (890, 90799), (899, 89890), (1010, 80011), (1798, 44945), (2581, 31310), (2759, 29290), (2929, 27590), (3131, 25810), (4495, 17978), (5162, 15655), (5518, 14645), (5858, 13795), (6262, 12905), (8989, 8990)]