201780550

素因数分解:

$2^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^2$

素因数の和:206

約数の個数: 72

約数和(自身を含む): 406848960

約数和(自身を除く): 205068410

約数列:

[1, 2, 5, 10, 25, 29, 31, 50, 58, 62, 67, 134, 145, 155, 290, 310, 335, 670, 725, 775, 899, 1450, 1550, 1675, 1798, 1943, 2077, 3350, 3886, 4154, 4489, 4495, 8978, 8990, 9715, 10385, 19430, 20770, 22445, 22475, 44890, 44950, 48575, 51925, 60233, 97150, 103850, 112225, 120466, 130181, 139159, 224450, 260362, 278318, 301165, 602330, 650905, 695795, 1301810, 1391590, 1505825, 3011650, 3254525, 3478975, 4035611, 6509050, 6957950, 8071222, 20178055, 40356110, 100890275, 201780550]

約数ペア:

[(1, 201780550), (2, 100890275), (5, 40356110), (10, 20178055), (25, 8071222), (29, 6957950), (31, 6509050), (50, 4035611), (58, 3478975), (62, 3254525), (67, 3011650), (134, 1505825), (145, 1391590), (155, 1301810), (290, 695795), (310, 650905), (335, 602330), (670, 301165), (725, 278318), (775, 260362), (899, 224450), (1450, 139159), (1550, 130181), (1675, 120466), (1798, 112225), (1943, 103850), (2077, 97150), (3350, 60233), (3886, 51925), (4154, 48575), (4489, 44950), (4495, 44890), (8978, 22475), (8990, 22445), (9715, 20770), (10385, 19430)]