19938100

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{313}}^1$

素因数の和:354

約数の個数: 108

約数和(自身を含む): 54374124

約数和(自身を除く): 34436024

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 25, 26, 28, 35, 49, 50, 52, 65, 70, 91, 98, 100, 130, 140, 175, 182, 196, 245, 260, 313, 325, 350, 364, 455, 490, 626, 637, 650, 700, 910, 980, 1225, 1252, 1274, 1300, 1565, 1820, 2191, 2275, 2450, 2548, 3130, 3185, 4069, 4382, 4550, 4900, 6260, 6370, 7825, 8138, 8764, 9100, 10955, 12740, 15337, 15650, 15925, 16276, 20345, 21910, 28483, 30674, 31300, 31850, 40690, 43820, 54775, 56966, 61348, 63700, 76685, 81380, 101725, 109550, 113932, 142415, 153370, 199381, 203450, 219100, 284830, 306740, 383425, 398762, 406900, 569660, 712075, 766850, 797524, 996905, 1424150, 1533700, 1993810, 2848300, 3987620, 4984525, 9969050, 19938100]

約数ペア:

[(1, 19938100), (2, 9969050), (4, 4984525), (5, 3987620), (7, 2848300), (10, 1993810), (13, 1533700), (14, 1424150), (20, 996905), (25, 797524), (26, 766850), (28, 712075), (35, 569660), (49, 406900), (50, 398762), (52, 383425), (65, 306740), (70, 284830), (91, 219100), (98, 203450), (100, 199381), (130, 153370), (140, 142415), (175, 113932), (182, 109550), (196, 101725), (245, 81380), (260, 76685), (313, 63700), (325, 61348), (350, 56966), (364, 54775), (455, 43820), (490, 40690), (626, 31850), (637, 31300), (650, 30674), (700, 28483), (910, 21910), (980, 20345), (1225, 16276), (1252, 15925), (1274, 15650), (1300, 15337), (1565, 12740), (1820, 10955), (2191, 9100), (2275, 8764), (2450, 8138), (2548, 7825), (3130, 6370), (3185, 6260), (4069, 4900), (4382, 4550)]