20197907500

素因数分解:

$2^2\times 5^4\times {\mathrm{131}}^1\times {\mathrm{61673}}^1$

素因数の和:61828

約数の個数: 60

約数和(自身を含む): 44506672056

約数和(自身を除く): 24308764556

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 131, 250, 262, 500, 524, 625, 655, 1250, 1310, 2500, 2620, 3275, 6550, 13100, 16375, 32750, 61673, 65500, 81875, 123346, 163750, 246692, 308365, 327500, 616730, 1233460, 1541825, 3083650, 6167300, 7709125, 8079163, 15418250, 16158326, 30836500, 32316652, 38545625, 40395815, 77091250, 80791630, 154182500, 161583260, 201979075, 403958150, 807916300, 1009895375, 2019790750, 4039581500, 5049476875, 10098953750, 20197907500]

約数ペア:

[(1, 20197907500), (2, 10098953750), (4, 5049476875), (5, 4039581500), (10, 2019790750), (20, 1009895375), (25, 807916300), (50, 403958150), (100, 201979075), (125, 161583260), (131, 154182500), (250, 80791630), (262, 77091250), (500, 40395815), (524, 38545625), (625, 32316652), (655, 30836500), (1250, 16158326), (1310, 15418250), (2500, 8079163), (2620, 7709125), (3275, 6167300), (6550, 3083650), (13100, 1541825), (16375, 1233460), (32750, 616730), (61673, 327500), (65500, 308365), (81875, 246692), (123346, 163750)]