20169927575

素因数分解:

$5^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{547}}^1\times {\mathrm{971}}^1$

素因数の和:1573

約数の個数: 72

約数和(自身を含む): 30118500864

約数和(自身を除く): 9948573289

約数列:

[1, 5, 7, 25, 31, 35, 49, 155, 175, 217, 245, 547, 775, 971, 1085, 1225, 1519, 2735, 3829, 4855, 5425, 6797, 7595, 13675, 16957, 19145, 24275, 26803, 30101, 33985, 37975, 47579, 84785, 95725, 118699, 134015, 150505, 169925, 210707, 237895, 423925, 531137, 593495, 670075, 752525, 830893, 1053535, 1189475, 1474949, 2655685, 2967475, 3717959, 4154465, 5267675, 7374745, 13278425, 16465247, 18589795, 20772325, 26025713, 36873725, 82326235, 92948975, 115256729, 130128565, 411631175, 576283645, 650642825, 806797103, 2881418225, 4033985515, 20169927575]

約数ペア:

[(1, 20169927575), (5, 4033985515), (7, 2881418225), (25, 806797103), (31, 650642825), (35, 576283645), (49, 411631175), (155, 130128565), (175, 115256729), (217, 92948975), (245, 82326235), (547, 36873725), (775, 26025713), (971, 20772325), (1085, 18589795), (1225, 16465247), (1519, 13278425), (2735, 7374745), (3829, 5267675), (4855, 4154465), (5425, 3717959), (6797, 2967475), (7595, 2655685), (13675, 1474949), (16957, 1189475), (19145, 1053535), (24275, 830893), (26803, 752525), (30101, 670075), (33985, 593495), (37975, 531137), (47579, 423925), (84785, 237895), (95725, 210707), (118699, 169925), (134015, 150505)]