20020300

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{257}}^1$

素因数の和:331

約数の個数: 72

約数和(自身を含む): 47028240

約数和(自身を除く): 27007940

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 41, 50, 76, 82, 95, 100, 164, 190, 205, 257, 380, 410, 475, 514, 779, 820, 950, 1025, 1028, 1285, 1558, 1900, 2050, 2570, 3116, 3895, 4100, 4883, 5140, 6425, 7790, 9766, 10537, 12850, 15580, 19475, 19532, 21074, 24415, 25700, 38950, 42148, 48830, 52685, 77900, 97660, 105370, 122075, 200203, 210740, 244150, 263425, 400406, 488300, 526850, 800812, 1001015, 1053700, 2002030, 4004060, 5005075, 10010150, 20020300]

約数ペア:

[(1, 20020300), (2, 10010150), (4, 5005075), (5, 4004060), (10, 2002030), (19, 1053700), (20, 1001015), (25, 800812), (38, 526850), (41, 488300), (50, 400406), (76, 263425), (82, 244150), (95, 210740), (100, 200203), (164, 122075), (190, 105370), (205, 97660), (257, 77900), (380, 52685), (410, 48830), (475, 42148), (514, 38950), (779, 25700), (820, 24415), (950, 21074), (1025, 19532), (1028, 19475), (1285, 15580), (1558, 12850), (1900, 10537), (2050, 9766), (2570, 7790), (3116, 6425), (3895, 5140), (4100, 4883)]