20474650

素因数分解:

$2^1\times 5^2\times 7^2\times {\mathrm{61}}^1\times {\mathrm{137}}^1$

素因数の和:224

約数の個数: 72

約数和(自身を含む): 45355356

約数和(自身を除く): 24880706

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 49, 50, 61, 70, 98, 122, 137, 175, 245, 274, 305, 350, 427, 490, 610, 685, 854, 959, 1225, 1370, 1525, 1918, 2135, 2450, 2989, 3050, 3425, 4270, 4795, 5978, 6713, 6850, 8357, 9590, 10675, 13426, 14945, 16714, 21350, 23975, 29890, 33565, 41785, 47950, 58499, 67130, 74725, 83570, 116998, 149450, 167825, 208925, 292495, 335650, 409493, 417850, 584990, 818986, 1462475, 2047465, 2924950, 4094930, 10237325, 20474650]

約数ペア:

[(1, 20474650), (2, 10237325), (5, 4094930), (7, 2924950), (10, 2047465), (14, 1462475), (25, 818986), (35, 584990), (49, 417850), (50, 409493), (61, 335650), (70, 292495), (98, 208925), (122, 167825), (137, 149450), (175, 116998), (245, 83570), (274, 74725), (305, 67130), (350, 58499), (427, 47950), (490, 41785), (610, 33565), (685, 29890), (854, 23975), (959, 21350), (1225, 16714), (1370, 14945), (1525, 13426), (1918, 10675), (2135, 9590), (2450, 8357), (2989, 6850), (3050, 6713), (3425, 5978), (4270, 4795)]